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php sample source codes
A simple random password generation function which generates various length (up to 32 characters) of password with numerals and alphabets. <?php function genPass($length = 8) //max length = 32 characters { return substr(md5(uniqid(rand(), true)), 0, $length); } ?>
This code scriptlet will generate passwords comprising of numerals, alphabates and underscore of varying length. /********************************************* ***** Author Santosh ***** email santos_raj@yahoo.com, santos_raj@rediffmail.com, santosh_kumarsingh@hotmail.com ***** just copy the code and paste. Save this ***** as a php file. run the url at the browser ***** and that is all. **********************************************/ <?php $min=4;// minimum length of password $max=15;// maximum length of password $pwd=""; //to store generated password for($i=0;$i<rand($min,$max);$i++){ $num=rand(48,122); if(($num > 97 && $num < 122)){ $pwd.=chr($num); }else if(($num > 65 && $num < 90)){ $pwd.=chr($num); }else if(($num >48 && $num < 57)){ $pwd.=chr($num); }else if($num==95){ $pwd.=chr($num); }else{ $i--; } } echo $pwd;// prints the password ?>
This is crazy pass generator && hash algorithm $not_avaoble_symbols = array(" ","^","/","\\",";",":","(",")","|","`","'","\"","~","<",">",".",",","[","]","{","}","_","-","+","=","?"); $pass= ""; while (strlen($pass)!=12) { $char = chr(rand(32,120)); if (!in_array($char,$not_avaoble_symbols)) { $pass .= $char; } } $pass = str_shuffle(str_rot13($pass)); $tohashmd5 = md5($pass); $tohashcrypt = crypt($pass,CRYPT_BLOWFISH); $tohashcrc = crc32($pass); $hash = str_rot13(strrev(sha1(md5(sha1($tohashcrypt.$tohashcrc.$tohashmd5)).md5(sha1($tohashmd5.$tohashcrypt.$tohashcrc))."$pass")));
A simple snippet to generate a random password that changes daily. * Note: The password will always be the same when generated during the same day with the same settings. Ideal for daily access codes etc. <?php /** * @desc Daily Random Password Generator * @author B3NZ0 Email: http://www.zend.com/mail_to.php?id=B3NZ0 * * @param int $pass_len The length of the password * @param bool $pass_num Include numeric chars in the password? * @param bool $pass_alpha Include alpha chars in the password? * @param bool $pass_mc Include mixed case chars in the password? * @param string $pass_exclude Chars to exclude from the password * @return string The password */ function make_daily_password($pass_len = 8, $pass_num = true, $pass_alpha = true, $pass_mc = true, $pass_exclude = '') { // Create the salt used to generate the password $salt = ''; if ($pass_alpha) { // a-z $salt .= 'abcdefghijklmnopqrstuvwxyz'; if ($pass_mc) { // A-Z $salt .= strtoupper($salt); } } if ($pass_num) { // 0-9 $salt .= '0123456789'; } // Remove any excluded chars from salt if ($pass_exclude) { $exclude = array_unique(preg_split('//', $pass_exclude)); $salt = str_replace($exclude, '', $salt); } $salt_len = strlen($salt); // Seed the random number generator with today's seed & password's unique settings for extra randomness mt_srand ((int) date('y')*date('z')*($salt_len+$pass_len)); // Generate today's random password $pass = ''; for ($i=0; $i<$pass_len; $i++) { $pass .= substr($salt, mt_rand() % $salt_len, 1); } return $pass; } ?>
A function that can create random passwords, or passwords based on words from a file. <?php ##Dual Mode Password Creation System ## by ## David Hamilton ##Visit www.potentialcreations.com for more information ##This function provided without any warrenty expressed or implied. ##Designed as a learning tool only. Not intended for any #particular use. function pass_gen($min, $max,$filename,$type=1){ #Seeding the random number generator #Required by some older versions of PHP srand((float) microtime() * 1000000); #open a text file with one word per line, number of words is arbitray #PHP is quick, I use a 1200+ word file as a test and the script still #executes in less than .005 seconds $fd=fopen($filename,"r") or die("Error accessing data file"); $fstring=fread($fd,filesize($filename)); $spice=array("0","1","2","3","4","5","6","8","9","#","&","@","$","_","%","?","+"); ################################################# ############BIG WARNING######################### #$wordl_list is an explode on \n the Windows newline character, #if your word file was made on another OS change the explode #character to the proper on for your OS $length=rand($min,$max); $word_list=explode("\n",$fstring); $list_size=sizeof($word_list); $spice_size=sizeof($spice); if ($type==1) { do { #Some word lists are "noisy" #and have spaces at the end of the words #So we trim em, and pick 2 random words. $a=trim($word_list[rand(0,$list_size)]); $b=trim($word_list[rand(0,$list_size)]); #Also, we must pick a spice character. $c=$spice[rand(0,$spice_size)]; #Now for the fun part. We flip a coin to #see which word will get uppercased $upper=rand(1,2); if ($upper==1) { $a=strtoupper($a); } if ($upper==2) { $b=strtoupper($b); } ##One last bit of chaos.. $dice=rand(1,3); if ($dice==1) { $pass=$c.$a.$spice[rand(0,$spice_size)].$b; } if ($dice==2) { $pass=$a.$c.$b; } if ($dice==3) { $pass=$a.$c.$b.$spice[rand(0,$spice_size)]; } while (strlen($pass)<$min) { $pass.=$spice[rand(0,$spice_size)]; } }while (strlen($pass)<$min || strlen($pass)>$max); #We have a range of acceptable lengths, so if it falls out #of bounds we have to loop over. return $pass; } ##This is the type setting for giberish passwords if ($type==2) { #This is a modified version of a tecnique other #password generation programs have used. #Using array_merge to get a nice big set of letters and numbers. $deck = array_merge ( range("0", "9"), range("a", "z"), range("A", "Z"), array("0","1","2","3","4","5","6","8","9","#","&","@","$","_","%","?","+") ); #this do loop glues together discrete elements of the array ($deck) #and merges them into a passowrd do{ for($i = 0; $i < $length; $i++) { $shuffle=rand(0,sizeof($deck)); $pass.=$deck[$shuffle]; } } #This is where we check to make sure the generated password #Does not match one in our "no-no" list. while(array_search($pass,$word_list)); #once done, we just return the password. return $pass; } } ?>
Very easy password generation (2 example) <? srand((double)microtime()*1000000); $characters = "a,b,c,d,e,f,1,2,3,4,5,A,B,C,D,E,F"; // symbols where are allowed in the password $characters_length = (strlen($characters)-1)/2; $token = explode(",",$characters); $pass_length=8; // length of the password for($i=0;$i<$pass_length;$i++) { $rand = rand(0,$characters_length); $password.= $token[$rand]; } echo "$password"; ?> <? srand((double)microtime()*1000000); $token = md5(uniqid(rand())); $password = substr($token, 0, 3); $password .= substr($token, 5, 2); $password .= substr($token, -3); echo "$password"; ?>
This snippet allows username/password authentication to be checked against a MYSQL database. The username/password combination could be entered via a form, standard HTTP authentication or a cookie. <?php # This bit of code may be freely used on condition that I will not be responsible for any mishap it might cause # Report bugs via the zend pages at www.zend.com # If $pass_stop = 1, check if you can log in, but do not exit!! Do not ask HTTP Password! # Required - sometimes you want to show a page whether user is logged in or not to know which message to send. # Password checking via # 1 Form input # 2 HTTP input # 3 Cookie return # Cookie set at end to last 1 year # 1 overides 2 overrides 3 # Variables for form: # f_userID User ID # f_pass Password # rem_cookie Remember username and password for the future in a cookie? (if 1 yes else no) $logged_in = false; # Function to request http password. function http_pass(){ GLOBAL $pass_stop; if ($pass_stop != 1){ $unauthstring = "You did not enter a valid Username/Password combination<p>If you believe that this is an error, please contact the <a href=\"mailto:you@somewhere.co.za\">webmaster</a>\n"; Header("WWW-Authenticate: Basic realm=\"Registered users Only\""); Header("HTTP/1.0 401 Unauthorized"); echo "$unauthstring"; exit; } # if ($pass_stop == 1) } # end function http_pass # set some control variables $userID = ''; $passwd = ''; $userstat = ''; # Is form variable set? # if so set process variables and skip http and cookies if ((isset($f_userID)) && (isset($f_pass))) { $userID = $f_userID; $passwd = $f_pass; $userstat = 1; } # end ((isset($f_userID) && isset($f_pass)) # Is HTTP variable set? # if so set process variables and skip cookies if (isset($PHP_AUTH_USER) && isset($PHP_AUTH_PW) && ($userstat == '')) { $userID = $PHP_AUTH_USER; $passwd = $PHP_AUTH_PW; $userstat = 1; } # end if ((isset($PHP_AUTH_USER) && isset($PHP_AUTH_PW) && ($userstat == '')) # Is Cookie variable set? # if so set process variables if (isset($download) && ($userstat == '')) { $tt1 = explode("|",$download); $userID = $tt1[0]; $passwd = $tt1[1]; $userstat = 1; } # end ((isset($download) && ($userstat == '')) # If no username or password - ask for it! And exit if ($userstat == '') {http_pass(); } # Now we should have a username/password combination # is it valid?? # Connect to DB $db = mysql_connect("localhost", "root", ""); if ( mysql_select_db("userDB",$db) ) { # Connect Ok ; } else { echo "Failed to connect to database<p>";exit;}; # get data from DB $query = "SELECT * FROM users WHERE uname = '$userID'"; $result = mysql_query($query); if ($result) { $x=1;} else {echo "PASSWORD SEARCH FAILED<p> result= $result<br> sql = $query <p>";}; if ($memberrow = mysql_fetch_array($result)) { $dbpasswd = $memberrow["passwd"]; $userpasswd = md5($passwd); if (!$userid) { $userid= $memberrow["uname"]; } ; if ($dbpasswd != $userpasswd) {http_pass();} #End if ($dbpasswd == $userpasswd) {$logged_in=true;} } # End if (!$userid) { $userid= $memberrow["uname"]; } else { http_pass;} #Ende else memberrow # Now we know who this guy is! # Set cookie for future # If not set - did he give permission? # If set, rewrite with new expiry date $cookie_value = $userID.'|'.$passwd; if ($logged_in && (($rem_cookie == 1) || isset($download))) {SetCookie("download",$cookie_value,time()+31622400); # Set Cookie for 366 days $download= $cookie_value; } ?>
adds a 100+ character string (length up to user after editing the key) and base64 encodes it, giving us LOTS of nice random letters and random case and various other characters, with the default key its over 150 characters long after base64'd. then turned into a 32 char md5 hash. Why is this good? Well if someone happens to steal the hash in some way, it would take a super computer to break that 150+ character password full of random case letters and more. <? function EncryptedPassword($pass) { $passwordkey = 'super.long.secret.password.key.that.will.take.forever.to.brute.force.the.md5.hash.so.anyone.trying.should.just.give.up-'; return md5(base64_encode($passwordkey.$pass)); } ?>
A very simple passwordcheck. You can add more security by adding crypto to your password listed in the plain-text file. <?php // This is your indexfile: index.php ?> <HTML> <HEAD> <TITLE>password admin</TITLE> </HEAD> <BODY link="#0066FF" vLink=#0066FF aLink=#0066FF bgcolor="#FFFFFF"> <?php $logok = FALSE; if (isset($login) and isset($passwd)){ $fp = fopen("password.txt", "r"); while (feof($fp) == 0) { $line = chop(fgets($fp,1000)); $arr = split(",", $line); if (($arr[0] == $login) and ($arr[1] == $passwd)) { $logok = TRUE; continue; } } } if (!$logok) { ?> <a name=top></a> <form method="post" action="index.php" name=loginform> <table border="0" cellspacing="0" cellpadding="0" align="center" width="100%"> <tr align="left"> <td valign="top" width="480"> <table border="0" cellspacing="0" cellpadding="0"> <tr align="left"> <td><font size="-2">login</font> </td> </tr> <tr> <td> <input type="text" name="login" maxlength=50 size=10 style="width: 90px; font-size: 10px"> </td> </tr> <tr> <td> <input type="password" name="passwd" maxlength=50 size=10 style="width: 90px; font-size: 10px"> </td> </tr> <tr align="left"> <td><font size="-2">password </font> </td> </tr> <tr align="right"> <td> <input type="Submit" value="login" name="action" style="width: 30px; heigth: 18px; font-size: 10px"> </td> </tr> </table> </td> </tr> </table> <br> </form> <?php } ?> <?php if ($logok) { ?> <script language=JavaScript> window.location.href="your_next_file.php"; </script> <?php } ?> <script language=JavaScript> <!-- if (document.loginform) { document.loginform.login.focus(); } // --> </script> </BODY> </HTML> *********************************************************** The next 2 lines will be in your plain-text-file password.txt: your_login_1,your_password_1 your_login_2,your_password_2
Password Generator - contains numbers and alphabates. <? //***************************************** // author: Bryan Cua // email: bmcua@hotmail.com // website: http://members.lycos.co.uk/dateonline/ // description: Password Generator. //***************************************** function generate_password(){ for($i=0; $i<8; $i++) { if(rand(0,1)) $pass[$i] = chr(rand(48,57)); else $pass[$i] = chr(rand(65,90)); } shuffle($pass); return implode("",$pass); } // example $pass = generate_password(); echo $pass; ?>
Password generation which has numbers alphabets and underscores. function password($min=4,$max=8) { for($i=0; $i<rand($min,$max); $i++) { $choose=rand(0,3); if($choose==0) $pwd[$i] = chr(rand(97,122)); else if($choose==1) $pwd[$i] = chr(rand(65,90)); else if ($choose==2) $pwd[$i] = chr(rand(48,57); } $passwd = password(); echo $passwd; ?>
Modified santos_raj Auto Password Generation. Change $len to got other length (default 8 chars) function make_password() { $len = 8; mt_srand((double)microtime() * 1000000); $pwd = ''; for($i = 0; $i < $len ; $i++) { $num = mt_rand(48, 122); if (($num > 96 && $num < 123 ) || ($num > 64 && $num < 91) || ($num > 47 && $num < 58)) $pwd .= chr($num); else $i--; } return $pwd; }
Password protection based in *.php file <? $list = file("users_list.php"); for ($index=0; $index < count($list); $index++) { $gr = split("\|", chop($list[$index])); $zz = explode("||", $list[$index]); //normal if($login == $zz[0] && (crypt($password,$password)) == $zz[2] && $zz[0] != "" && $zz[2] != ""){ $spr="ok"; $email=$zz[1]; setcookie("login", "$login"); setcookie("password", "$password"); } //admin if($login == $zz[0] && (crypt($password,$password)) == $zz[2] && $zz[3] == "1" && $zz[0] != "" && $zz[2] != ""){ $admin="yes"; $spr="ok"; setcookie("login", "$login"); setcookie("password", "$password"); } } if($spr!="ok"){ exit; } ?> password file (users_list.php): <? admin||phpdevil@tlen.pl||deC4b6GnweS0w||1|| normal||phpdevil@tlen.pl||aeCdb6Gnwev0w||0|| (no "?>" to end)
Module for generation of passwords based on different schemes from the more easy to the extreme passwords. Useful for autogeneration of passwords, for validationlinks ect. <?php /* File : password_lib.php Version : 1.0 Date : November 21st, 2002 Author : Lars B. Jensen, lars.jensen@ljweb.com Module Description Module to produce passwords. */ # Seed the random generator - consider doing this in a config file once for the entire site mt_srand((double)microtime()*1000000); function password_generate($nice = 1, $length=0, $allowchars = "") { # Find random password length if (!$length) $length = mt_rand(5, 9); # pronouncable password if ($nice == 1) return password_generate_pronouncable($length); # lowercase only, fix similar else if ($nice == 2) return password_generate_advanced($length, 0, 1, 0, 0, 1, $allowchars); # lowercase and numbers only, fix similar else if ($nice == 3) return password_generate_advanced($length, 0, 1, 1, 0, 1, $allowchars); # both lower and uppercase chars and numbers , fix similar else if ($nice == 4) return password_generate_advanced($length, 1, 1, 1, 0, 1, $allowchars); # all types of letters, including special chars, fix similar else if ($nice == 5) return password_generate_advanced($length, 1, 1, 1, 1, 1, $allowchars); # oh my :) the real deal - get it all and dont fix similars else if ($nice == 6) return password_generate_advanced($length, 1, 1, 1, 1, 0, $allowchars); # $nice contained illegal value, go for the easy 3 else return password_generate_advanced($length, 1, 1, 1, 0, 1); } function password_generate_advanced($length = 8, $allow_uppercase = 1, $allow_lowercase = 1, $allow_numbers = 1, $allow_special = 1, $fix_similar = 0, $valid_charset = "") { # Create a list of usable chars based upon the parameters if (!$valid_charset) { if ($allow_uppercase) $valid_charset .= 'ABCDEFGHIJKLMNOPQRSTUVXYZ'; if ($allow_lowercase) $valid_charset .= 'abcdefghijklmnopqrstuvxyz'; if ($allow_numbers) $valid_charset .= '0123456789'; if ($allow_special) $valid_charset .= '!#$%&()*+-./;<=>@\_'; } # Find the charset length $charset_length = strlen($valid_charset); # If no chars is allowed, return false if ($charset_length == 0) return false; # Initialize the password and loop till we have all $password = ""; while(strlen($password) < $length) { # Pull out a random char $char = $valid_charset[mt_rand(0, ($charset_length-1))]; # If similar is true, check if string contains mistakeable chars, add if accepted if (($fix_similar && !strpos('O01lI5S', $char)) || !$fix_similar) $password .= $char; } return $password; } function password_generate_pronouncable($length = 8) { # Initialize valid char lists $valid_consonant = 'bcdfghjkmnprstv'; $valid_vowel = 'aeiouy'; $valid_numbers = '0123456789'; # Find the charset length $consonant_length = strlen($valid_consonant); $vowel_length = strlen($valid_vowel); $numbers_length = strlen($valid_numbers); # Initialize the password and loop till we have all $password = ""; while(strlen($password) < $length) { # Pull out a random set of pronouncable chars if (mt_rand(0, 2) != 1) $password .= $valid_consonant[mt_rand(0, ($consonant_length-1))].$valid_vowel[mt_rand(0, ($vowel_length-1))].$valid_consonant[mt_rand(0, ($consonant_length-1))]; else $password .= $valid_numbers[mt_rand(0, ($numbers_length-1))]; } return substr($password, 0, $length); } ?>
A simple function which returns an autogenerated random alphanumerical password with the specified length. function NewPassword($len = 8) { $chars=array( "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P", "Q","R","S","T","U","V","W","X","Y","Z", //upper-case "a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p", "q","r","s","t","u","v","w","x","y","z", //lower-case "0","1","2","3","4","5","6","7","8","9" //numbers ); srand((float) microtime() * 10000000); $array=array_rand($chars, $len); $password=""; foreach ($array as $key => $val) $password.=$chars[$val]; return $password; }
Function to get a random ASCII Key, usefull to get a Primary Key, or get a password,... The length can be passed as argument function getRand(&$str,$max=10) { srand((double) microtime() * 1000000); $randval=rand(48,122); while(strlen($str)<$max) { if( ($randval>47 AND $randval<58) OR ($randval>64 AND $randval<91) OR ($randval>96 AND $randval<123) ) { $str.=chr($randval); getRand(&$str,&$max); } else { getRand(&$str,&$max); } } } getRand($str,$len); print "<LI>".$len; print "<LI>".$str;
Cool....no hassle.....you can generate a password which consits a couple of words we use in our daily life <?php #********************************************************* # Author : Ajay Kumar Mannam <ajay@appliednewmedia.com> # Date : 12 June 2001 # Purpose : Generates random password which consists of # pronounceable words # How to : Save this as php file(eg: pwd.inc.php) # Include that file in your script # Call genPassword() function to generate password # ex: $new_pwd=genPassword(); #********************************************************* function genPassword() { #********** Set of words **************** $word_arr_one = array ("rose","pink","blue","cyan","gold", "lime","silk","slim", "walk","warm","zoom","high","hell","posh","face","hand", "dose","cool","club","clue","baby","body","auto","acid"); $word_arr_two = array("aunt","love","girl","time","door","disc","book","news", "cock","bond","bomb","joke","tall","tank","drum","hill", "hand","cook","look","mate","main","pack","page","palm"); $arr_one_len=sizeof($word_arr_one); $arr_two_len=sizeof($word_arr_two); #********* Randomize on microseconds ******** mt_srand ((double)microtime()*1000000); #********************************************************** # Construct a string by picking up 8 words in random # from first array of words # Add word at start if pick up word is at even position # otherwise add at end of the string #************************************************************ for($i=0; $i<10; $i++) { $pos_one=mt_rand(0, ($arr_one_len-1)); if($pos_one % 2 == 0 ) { $pwd_one = $word_arr_one[$pos_one].$pwd_one; } else { $pwd_one.= $word_arr_one[$pos_one]; } } #********************************************************** # Construct a string by picking up 8 words in random # from second array of words # Add word at end if pick up word is at even position # otherwise add at start of the string #************************************************************ for($i=0; $i<10; $i++) { $pos_two=mt_rand(0, ($arr_two_len-1)); if($pos_two % 2 == 0 ) { $pwd_two.= $word_arr_two[$pos_two]; } else { $pwd_two = $word_arr_two[$pos_two].$pwd_two; } } #********* pick up a random number between 1 and 9 *********** $rnd_int=mt_rand(2,9); #****************************************************************************** # Now to generate password # pick up first word(4 letters) from first string(constructed from array one) # + # number you picked up in random # + # pich up first word(4 letters) from second string(constructed from array two) #****************************************************************************** $pwd=substr($pwd_one,0,4).$rnd_int.substr($pwd_two,0,4); return $pwd; } ?>
A function that randomizes a password string from an array. <?php // The function with a default length of 8 characters function mkpass($length = 8) { // Create a list of characters and digits $foo = array_merge ( range("0", "9"), range("a", "z"), range("A", "Z") ); // A loop to build the randomized string for ($i;$i<$length;$i++) { $rand_char = array_rand($foo); $string .= $foo[$rand_char]; } return($string); } echo "<pre>Password: ".mkpass()."</pre>\n"; ?>
a simple function that can generate a random password/verification code to an unlimited number of chars by modifying make_password(int). <? // make the seed for the random generator function make_seed() { list($usec, $sec) = explode(' ', microtime()); return (float) $sec + ((float) $usec * 100000); } // make the password function make_password($pass_len) { //seed the random generator mt_srand(make_seed()); //create password $password = ""; for ($loop = 0; $loop < $pass_len; $loop++) { switch(mt_rand(0, 2)) { case 0: $password .= mt_rand(0, 9); break; // Number (0-9) case 1: $password .= chr(mt_rand(97, 122)); break; // Alpha Lower (a-z) case 2: $password .= chr(mt_rand(65, 90)); break; // Alpha Upper (A-Z) } } return $password; } $password = make_password(7); print("Random Password: $password<br>\n"); ?>
Generates a random password of 8 characters. (can be changed) <?PHP function genPass(){ $par = array(); $p_leng = 8; // password length $char = array_merge(range(a,z),range(0,9)); for ($i=0;$i<$p_leng;$i++){ $disc = mt_rand(0,count($char)); $par[$i] = $char[$disc]; $pass = $pass.$char[$disc]; } return $pass; } echo $password = genPass(); ?>
This function generates random pronounceable passwords. (ie jachudru, cupheki) <? /* Generate password. (i.e. jachudru, cupheki) */ function genpassword($length){ srand((double)microtime()*1000000); $vowels = array("a", "e", "i", "o", "u"); $cons = array("b", "c", "d", "g", "h", "j", "k", "l", "m", "n", "p", "r", "s", "t", "u", "v", "w", "tr", "cr", "br", "fr", "th", "dr", "ch", "ph", "wr", "st", "sp", "sw", "pr", "sl", "cl"); $num_vowels = count($vowels); $num_cons = count($cons); for($i = 0; $i < $length; $i++){ $password .= $cons[rand(0, $num_cons - 1)] . $vowels[rand(0, $num_vowels - 1)]; } return substr($password, 0, $length); } ?>
Creates a password of the form Word(Number)Word(..NumberWord..) <?php $config_NumberOfWords = 3; $config_MaxNumberOfDigitBetweenWords = 2; $config_DigitsAfterLastWord = TRUE; function secure_password_generate ($debug=FALSE) { // thank you yaragn! GLOBAL $config_NumberOfWords, $config_MaxNumberOfDigitBetweenWords, $config_DigitsAfterLastWord; mt_srand ((float) microtime() * 1000000); $securePassword = ""; $safeEnglishWords = secure_password_get_words(); $count = count($safeEnglishWords); FOR ($i=0; $i < $config_NumberOfWords; $i++) { $securePassword .= $safeEnglishWords[mt_rand(0,$count)]; If ($config_DigitsAfterLastWord OR $i + 1 != $config_NumberOfWords) $securePassword .= mt_rand(0,pow(10,$config_MaxNumberOfDigitBetweenWords) -1); } If ($debug) { $combinations = pow($count, $config_NumberOfWords) * pow(10, $config_MaxNumberOfDigitBetweenWords * ($config_NumberOfWords - 1)); echo $combinations . " number of combinations.<br>"; echo floor(pow($combinations, 0.5)) . " relative stength.<br>"; // relative strength principle based on rough mean - root of the number of combinations is the time to find a single password } return $securePassword; } function secure_password_get_words () { // slightly modified data from http://www.rick.harrison.net/annex/specialeng.txt - many thanks Rick Harrison! $array = Array( 'a', 'able', 'about', 'above', 'accept', 'accident', 'accuse', 'across', 'act', 'activist', 'actor', 'add', 'administration', 'admit', 'advise', 'affect', 'afraid', 'after', 'again', 'against', 'age', 'agency', 'aggression', 'ago', 'agree', 'agriculture', 'aid', 'aim', 'air', 'airplane', 'airport', 'alive', 'all', 'ally', 'almost', 'alone', 'along', 'already', 'also', 'although', 'always', 'ambassador', 'amend', 'ammunition', 'among', 'amount', 'an', 'anarchy', 'ancient', 'and', 'anger', 'animal', 'anniversary', 'announce', 'another', 'answer', 'any', 'apologize', 'appeal', 'appear', 'appoint', 'approve', 'area', 'argue', 'arms', 'army', 'around', 'arrest', 'arrive', 'art', 'artillery', 'as', 'ash', 'ask', 'assist', 'astronaut', 'asylum', 'at', 'atmosphere', 'atom', 'attack', 'attempt', 'attend', 'automobile', 'autumn', 'awake', 'award', 'away', 'back', 'bad', 'balance', 'ball', 'balloon', 'ballot', 'ban', 'bank', 'bar', 'base', 'battle', 'be', 'beach', 'beat', 'beauty', 'because', 'become', 'bed', 'beg', 'begin', 'behind', 'believe', 'bell', 'belong', 'below', 'best', 'betray', 'better', 'between', 'big', 'bill', 'bird', 'bite', 'bitter', 'black', 'blame', 'blanket', 'bleed', 'blind', 'block', 'blood', 'blow', 'blue', 'boat', 'body', 'boil', 'bomb', 'bone', 'book', 'border', 'born', 'borrow', 'both', 'bottle', 'bottom', 'box', 'boy', 'brain', 'brave', 'bread', 'break', 'breathe', 'bridge', 'brief', 'bright', 'bring', 'broadcast', 'brother', 'brown', 'build', 'bullet', 'burn', 'burst', 'bury', 'bus', 'business', 'busy', 'but', 'buy', 'by', 'cabinet', 'call', 'calm', 'camera', 'campaign', 'can', 'cancel', 'cancer', 'candidate', 'cannon', 'capital', 'capture', 'car', 'care', 'careful', 'carry', 'case', 'cat', 'catch', 'cattle', 'cause', 'ceasefire', 'celebrate', 'cell', 'center', 'century', 'ceremony', 'chairman', 'champion', 'chance', 'change', 'charge', 'chase', 'cheat', 'check', 'cheer', 'chemicals', 'chieg', 'child', 'choose', 'church', 'circle', 'citizen', 'city', 'civil', 'civilian', 'clash', 'clean', 'clear', 'clergy', 'climb', 'clock', 'close', 'cloth', 'clothes', 'cloud', 'coal', 'coalition', 'coast', 'coffee', 'cold', 'collect', 'colony', 'color', 'come', 'comedy', 'command', 'comment', 'committee', 'common', 'communicate', 'company', 'compete', 'complete', 'compromise', 'computer', 'concern', 'condemn', 'condition', 'conference', 'confirm', 'conflict', 'congratulate', 'congress', 'connect', 'conservative', 'consider', 'contain', 'continent', 'continue', 'control', 'convention', 'cook', 'cool', 'cooperate', 'copy', 'correct', 'cost', 'costitution', 'cotton', 'count', 'country', 'court', 'cover', 'cow', 'coward', 'crash', 'create', 'creature', 'credit', 'crew', 'crime', 'criminal', 'crisis', 'criticize', 'crops', 'cross', 'crowd', 'cruel', 'crush', 'cry', 'culture', 'cure', 'current', 'custom', 'cut', 'dam', 'damage', 'dance', 'danger', 'dark', 'date', 'daughter', 'day', 'dead', 'deaf', 'deal', 'debate', 'decide', 'declare', 'deep', 'defeat', 'defend', 'deficit', 'degree', 'delay', 'delegate', 'demand', 'democracy', 'demonstrate', 'denounce', 'deny', 'depend', 'deplore', 'deploy', 'describe', 'desert', 'design', 'desire', 'destroy', 'details', 'develop', 'device', 'dictator', 'die', 'different', 'difficult', 'dig', 'dinner', 'diplomat', 'direct', 'direction', 'dirty', 'disappear', 'disarm', 'discover', 'discuss', 'disease', 'dismiss', 'dispute', 'dissident', 'distance', 'distant', 'dive', 'divide', 'do', 'doctor', 'document', 'dollar', 'door', 'down', 'draft', 'dream', 'drink', 'drive', 'drown', 'drugs', 'dry', 'during', 'dust', 'duty', 'each', 'early', 'earn', 'earth', 'earthquake', 'ease', 'east', 'easy', 'eat', 'economy', 'edge', 'educate', 'effect', 'effort', 'egg', 'either', 'elect', 'electricity', 'electron', 'element', 'embassy', 'emergency', 'emotion', 'employ', 'empty', 'end', 'enemy', 'energy', 'enforce', 'engine', 'engineer', 'enjoy', 'enough', 'enter', 'eqipment', 'equal', 'escape', 'especially', 'establish', 'even', 'event', 'ever', 'every', 'evidence', 'evil', 'evironment', 'exact', 'examine', 'example', 'excellent', 'except', 'exchange', 'excite', 'excuse', 'execute', 'exile', 'exist', 'expand', 'expect', 'expel', 'experiment', 'expert', 'explain', 'explode', 'explore', 'export', 'express', 'extend', 'extra', 'extreme', 'face', 'fact', 'factory', 'fail', 'fair', 'fall', 'family', 'famous', 'fanatic', 'far', 'farm', 'fast', 'fat', 'father', 'fear', 'feast', 'federal', 'feed', 'feel', 'female', 'fertile', 'few', 'field', 'fierce', 'fight', 'fill', 'film', 'final', 'find', 'fine', 'finish', 'fire', 'firm', 'first', 'fish', 'fix', 'flag', 'flat', 'flee', 'float', 'flood', 'floor', 'flow', 'flower', 'fluid', 'fly', 'fog', 'follow', 'food', 'fool', 'foot', 'for', 'force', 'foreign', 'forget', 'forgive', 'form', 'former', 'forward', 'free', 'freeze', 'fresh', 'friend', 'frighten', 'from', 'front', 'fruit', 'fuel', 'funeral', 'furious', 'future', 'gain', 'game', 'gas', 'gather', 'general', 'gentle', 'get', 'gift', 'girl', 'give', 'glass', 'go', 'goal', 'God', 'gold', 'good', 'good-bye', 'goods', 'govern', 'government', 'grain', 'grandfather', 'grandmother', 'grass', 'gray', 'great', 'green', 'grind', 'ground', 'group', 'grow', 'guarantee', 'guard', 'guerilla', 'guide', 'guilty', 'gun', 'hair', 'half', 'halt', 'hang', 'happen', 'happy', 'harbor', 'hard', 'harm', 'hat', 'hate', 'he', 'head', 'headquarters', 'health', 'hear', 'heart', 'heat', 'heavy', 'helicopter', 'help', 'here', 'hero', 'hide', 'high', 'hijack', 'hill', 'history', 'hit', 'hold', 'hole', 'holiday', 'holy', 'home', 'honest', 'honor', 'hope', 'horrible', 'horse', 'hospital', 'hostage', 'hostile', 'hostilities', 'hot', 'hotel', 'hour', 'house', 'how', 'however', 'huge', 'human', 'humor', 'hunger', 'hunt', 'hurry', 'hurt', 'husband', 'I', 'ice', 'idea', 'if', 'illegal', 'imagine', 'immediate', 'import', 'important', 'improve', 'in', 'incident', 'incite', 'include', 'increase', 'independent', 'industry', 'inflation', 'influence', 'inform', 'injure', 'innocent', 'insane', 'insect', 'inspect', 'instead', 'instrument', 'insult', 'intelligent', 'intense', 'interest', 'interfere', 'international', 'intervene', 'invade', 'invent', 'invest', 'investigate', 'invite', 'involve', 'iron', 'island', 'issue', 'it', 'jail', 'jewel', 'job', 'join', 'joint', 'joke', 'judge', 'jump', 'jungle', 'jury', 'just', 'keep', 'kick', 'kidnap', 'kill', 'kind', 'kiss', 'knife', 'know', 'labor', 'laboratory', 'lack', 'lake', 'land', 'language', 'large', 'last', 'late', 'laugh', 'launch', 'law', 'lead', 'leak', 'learn', 'leave', 'left', 'legal', 'lend', 'less', 'let', 'letter', 'level', 'liberal', 'lie', 'life', 'light', 'lightning', 'like', 'limit', 'line', 'link', 'liquid', 'list', 'listen', 'little', 'live', 'load', 'local', 'lonely', 'long', 'look', 'lose', 'loud', 'love', 'low', 'loyal', 'luck', 'machine', 'mad', 'mail', 'main', 'major', 'majority', 'make', 'male', 'man', 'map', 'march', 'mark', 'marker', 'mass', 'material', 'may', 'mayor', 'mean', 'measure', 'meat', 'medicine', 'meet', 'melt', 'member', 'memorial', 'memory', 'mercenary', 'mercy', 'message', 'metal', 'method', 'microscope', 'middle', 'militant', 'military', 'milk', 'mind', 'mine', 'mineral', 'minister', 'minor', 'minority', 'minute', 'miss', 'missile', 'missing', 'mistake', 'mix', 'mob', 'moderate', 'modern', 'money', 'month', 'moon', 'more', 'morning', 'most', 'mother', 'motion', 'mountain', 'mourn', 'move', 'much', 'murder', 'music', 'must', 'mystery', 'naked', 'name', 'nation', 'navy', 'near', 'necessary', 'need', 'negotiate', 'neither', 'nerve', 'neutral', 'never', 'new', 'news', 'next', 'nice', 'night', 'no', 'noise', 'nominate', 'noon', 'normal', 'north', 'not', 'note', 'nothing', 'now', 'nowhere', 'nuclear', 'number', 'nurse', 'obey', 'object', 'observe', 'occupy', 'ocean', 'of', 'off', 'offensive', 'offer', 'officer', 'official', 'often', 'oil', 'old', 'on', 'once', 'only', 'open', 'operate', 'opinion', 'oppose', 'opposite', 'oppress', 'or', 'orbit', 'orchestra', 'order', 'organize', 'other', 'oust', 'out', 'over', 'overthrow', 'owe', 'own', 'pain', 'paint', 'palace', 'pamphlet', 'pan', 'paper', 'parachute', 'parade', 'pardon', 'parent', 'parliament', 'part', 'party', 'pass', 'passenger', 'passport', 'past', 'path', 'pay', 'peace', 'people', 'percent', 'perfect', 'perhaps', 'period', 'permanent', 'permit', 'person', 'physics', 'piano', 'picture', 'piece', 'pilot', 'pipe', 'pirate', 'place', 'planet', 'plant', 'play', 'please', 'plenty', 'plot', 'poem', 'point', 'poison', 'police', 'policy', 'politics', 'pollute', 'poor', 'popular', 'population', 'port', 'position', 'possess', 'possible', 'postpone', 'pour', 'power', 'praise', 'pray', 'pregnant', 'prepare', 'present', 'president', 'press', 'pressure', 'prevent', 'price', 'priest', 'prison', 'private', 'prize', 'probably', 'problem', 'produce', 'professor', 'program', 'progress', 'project', 'promise', 'propaganda', 'property', 'propose', 'protect', 'protest', 'proud', 'prove', 'provide', 'public', 'publication', 'publish', 'pull', 'pump', 'punish', 'purchase', 'pure', 'purpose', 'push', 'put', 'question', 'quick', 'quiet', 'rabbi', 'race', 'radar', 'radiation', 'radio', 'raid', 'railroad', 'rain', 'raise', 'rapid', 'rare', 'rate', 'reach', 'read', 'ready', 'real', 'realistic', 'reason', 'reasonable', 'rebel', 'receive', 'recent', 'recession', 'recognize', 'record', 'red', 'reduce', 'reform', 'refugee', 'refuse', 'regret', 'relations', 'release', 'religion', 'remain', 'remember', 'remove', 'repair', 'repeat', 'report', 'repress', 'request', 'rescue', 'resign', 'resolution', 'responsible', 'rest', 'restrain', 'restrict', 'result', 'retire', 'return', 'revolt', 'rice', 'rich', 'ride', 'right', 'riot', 'rise', 'river', 'road', 'rob', 'rock', 'rocket', 'roll', 'room', 'root', 'rope', 'rough', 'round', 'rub', 'rubber', 'ruin', 'rule', 'run', 'sabotage', 'sacrifice', 'sad', 'safe', 'sail', 'salt', 'same', 'satellite', 'satisfy', 'save', 'say', 'school', 'science', 'scream', 'sea', 'search', 'season', 'seat', 'second', 'secret', 'security', 'see', 'seek', 'seem', 'seize', 'self', 'sell', 'senate', 'send', 'sense', 'sentence', 'separate', 'series', 'serious', 'sermon', 'serve', 'set', 'settle', 'several', 'severe', 'sex', 'shake', 'shape', 'share', 'sharp', 'she', 'shell', 'shine', 'ship', 'shock', 'shoe', 'shoot', 'short', 'should', 'shout', 'show', 'shrink', 'shut', 'sick', 'side', 'sign', 'signal', 'silence', 'silver', 'similar', 'simple', 'since', 'sing', 'sink', 'sister', 'sit', 'situation', 'size', 'skeleton', 'skill', 'skull', 'sky', 'slave', 'sleep', 'slide', 'slow', 'small', 'smash', 'smell', 'smile', 'smoke', 'smooth', 'snow', 'so', 'social', 'soft', 'soldier', 'solid', 'solve', 'some', 'son', 'soon', 'sorry', 'sort', 'sound', 'south', 'space', 'speak', 'special', 'speed', 'spend', 'spill', 'spilt', 'spirit', 'split', 'sports', 'spread', 'spring', 'spy', 'stab', 'stamp', 'stand', 'star', 'start', 'starve', 'state', 'station', 'statue', 'stay', 'steal', 'steam', 'steel', 'step', 'stick', 'still', 'stomach', 'stone', 'stop', 'store', 'storm', 'story', 'stove', 'straight', 'strange', 'street', 'stretch', 'strike', 'strong', 'struggle', 'stubborn', 'study', 'stupid', 'submarine', 'substance', 'substitute', 'subversion', 'succeed', 'such', 'sudden', 'suffer', 'sugar', 'summer', 'sun', 'supervise', 'supply', 'support', 'suppose', 'suppress', 'sure', 'surplus', 'surprise', 'surrender', 'surround', 'survive', 'suspect', 'suspend', 'swallow', 'swear', 'sweet', 'swim', 'sympathy', 'system', 'take', 'talk', 'tall', 'tank', 'target', 'task', 'taste', 'tax', 'teach', 'team', 'tear', 'tears', 'technical', 'telephone', 'telescope', 'television', 'tell', 'temperature', 'temporary', 'tense', 'term', 'terrible', 'territory', 'terror', 'test', 'textiles', 'than', 'thank', 'that', 'the', 'theater', 'then', 'there', 'thick', 'thin', 'thing', 'think', 'third', 'this', 'threaten', 'through', 'throw', 'tie', 'time', 'tired', 'tissue', 'to', 'today', 'together', 'tomorrow', 'tonight', 'too', 'tool', 'top', 'torture', 'touch', 'toward', 'town', 'trade', 'tradition', 'tragic', 'train', 'traitor', 'transport', 'trap', 'travel', 'treason', 'treasure', 'treat', 'treaty', 'tree', 'trial', 'tribe', 'trick', 'trip', 'troops', 'trouble', 'truce', 'truck', 'trust', 'try', 'turn', 'under', 'understand', 'unite', 'universe', 'university', 'unless', 'until', 'up', 'urge', 'urgent', 'use', 'usual', 'valley', 'value', 'vehicle', 'version', 'veto', 'vicious', 'victim', 'victory', 'village', 'violate', 'violence', 'violin', 'virus', 'visit', 'voice', 'volcano', 'vote', 'voyage', 'wages', 'wait', 'walk', 'wall', 'want', 'war', 'warm', 'warn', 'wash', 'waste', 'watch', 'water', 'wave', 'way', 'weak', 'wealth', 'weapon', 'wear', 'weather', 'weigh', 'welcome', 'well', 'west', 'wet', 'what', 'wheat', 'wheel', 'when', 'where', 'which', 'while', 'white', 'who', 'why', 'wide', 'wife', 'wild', 'will', 'willing', 'win', 'wind', 'window', 'wire', 'wise', 'wish', 'with', 'withdraw', 'without', 'woman', 'wonder', 'wood', 'woods', 'word', 'work', 'world', 'worry', 'worse', 'wound', 'wreck', 'write', 'wrong', 'year', 'yellow', 'yes', 'yesterday', 'yet', 'you', 'young'); return $array; } ?>
This simple function returns a randomly generated password ideal for websites which auto-generate their user's passwords. I have created it such that it excludes certain characters which may look ambiguous on a webpage i, I, 1, | etc. This you may customize. <? function return_password () { // set password length $pw_length = 8; // set ASCII range for random character generation $lower_ascii_bound = 50; // "2" $upper_ascii_bound = 122; // "z" // Exclude special characters and some confusing alphanumerics // o,O,0,I,1,l etc $notuse = array (58,59,60,61,62,63,64,73,79,91,92,93,94,95,96,108,111); while ($i < $pw_length) { mt_srand ((double)microtime() * 1000000); // random limits within ASCII table $randnum = mt_rand ($lower_ascii_bound, $upper_ascii_bound); if (!in_array ($randnum, $notuse)) { $password = $password . chr($randnum); $i++; } } return $password; } ?>
Quick little class to authenticate a username/password off of a PDC. <? /* Author: Edward Rudd <eddie@omegaware.com> Based on smb_print by Nathan Cassano <nathan@cjhunter.com> Version: 0.1 Example: $test = new smb_auth(); $test->host = "cannondale"; $test->smbclient = "/usr/bin/smbclient"; #default is "/usr/bin/smbclient" $test->username = "guest"; $test->password = "dontlook"; if($test->authenticate() != 0){ echo "Invalid Authentication"; }else{ echo "Authenticated"; } */ class smb_auth { var $host; var $username; var $password; var $smbclient = "/usr/bin/smbclient"; function smb_auth() { return 0; } function authenticate() { /* Make sure smbclient path is correct */ if(!is_executable($this->smbclient)){ die("Error: '$this->smbclient' invalid smbclient path"); } /* create the shell script */ $script = "$this->smbclient //$this->host/IPC$ $this->password " ."-U $this->username -c 'quit' > /dev/null 2>&1"; $stuff = system ($script,$result); return $result; } } ?>
The code listing provides a function and its implementation. This password generator accepts two optional parameters, length and number of numbers. <html> <head> <title>Simple Password Generator</title> <!-- PHP-Code start //--> <?php /**************** Title: Simple Password Generator with parameters Author: TheSun E-Mail: apocataclysm@hotmail.com Description: (see title) Generates a (pseudo)-random password based on following parameters: - Length: How long the password should be - Number of numbers: How many numbers should be included in the password (cannot be longer than length) License: Free to use for anyone. Please just leave all comments intact. *****************/ $password=""; $len=8; //default password length $num=0; //default number of numbers //Checks to see if password length was specified if(isset($_POST["pswd_length"])) { $len = (int) ($_POST["pswd_length"]); } //Logic that determines what parameters to pass to gen_pass based on user input if(isset($_POST["num"])) { $num = (int) ($_POST["num"]); } if((is_int($len) && $len > 0)) { if(is_int($num) && $num <= $len) { $password = gen_pass($len, $num); } else if ($num > $len) { echo "Number of numbers is longer than password length. Using only password length."; $password = gen_pass($len, NULL); } else { echo "Number of numbers is invalid. Using only password length."; } } else { echo "Enter a valid password length."; } //Password generating gen_pass() function function gen_pass($length, $numb) { //Alphabet range (Lower and upper case) $low_alpha = range('a','z'); $upp_alpha = range('A','Z'); //Randomly generated numbers $nums = array(); //Location of random numbers (also randomly generated) $placenums = array(); //Helper variable for placenums $newrand=0; $prevrand=-1; if($numb!==NULL && ($GLOBALS['len'] >= $GLOBALS['num'])) { //Generate random numbers and their random positions in password for($i=0; $i<$numb; $i++) { $nums[$i] = mt_rand(0,9); $newrand = mt_rand(0, $length-1); //Makes sure $placenums doesn't contain duplicate values (=same position) for($j=0; $j<count($placenums); $j++) { if($newrand==$placenums[$j]) { $newrand = mt_rand(0, $length-1); $j=-1; } else { continue; } } $placenums[$i] = $newrand; } for($i=0; $i<$length; $i++) { /* Loop through $numb numbers to find a match i.e. whether a $placenums location number matches the current $i If so, add that number to the current location, else add letter */ for($j=0; $j<$numb; $j++) { if($i==$placenums[$j]) { $GLOBALS['password'].=$nums[$j]; continue 2; } else { continue; } } //Add random upper of lower case letter $rnd = mt_rand(0,1); if($rnd==0) { $GLOBALS['password'].=$upp_alpha[mt_rand(0,25)]; } else { $GLOBALS['password'].=$low_alpha[mt_rand(0,25)]; } } } else { for($i=0; $i<$length; $i++) { $rnd = mt_rand(0,2); if($rnd==0) { $GLOBALS['password'].=mt_rand(0,9); } else if($rnd==1) { $GLOBALS['password'].=$low_alpha[mt_rand(0,25)]; } else { $GLOBALS['password'].=$upp_alpha[mt_rand(0,25)]; } } } return $GLOBALS['password']; } ?> <!-- PHP-Code End //--> </head> <body> <h1>Simple Password Generator</h1> <hr /> <form name="myForm" method="POST" action="<? echo $_SERVER['PHP_SELF']; ?>"> Password length:<input type="text" name="pswd_length" value="<? echo $len; ?>" /><br /> Number of numbers:<input type="text" name="num" value="<? echo $num; ?>" /><br /> Password:<input type="text" name="pwsd" value="<? echo $password; ?>" size="20" readonly /><br /> Password (lower-case):<input type="text" value="<? echo strtolower($password); ?>" size="20" readonly /><br /> <input type="submit" value="Generate" /> </form> <hr /> </body> </html>
Function will generate a random password with a default length of 8 or a user supplied length. Password will contain special characters, integers, and upper and lowercase characters. function newPass($maxLen=8,$pass='') { srand((float) microtime() * 10000000); shuffle($params=array_merge(range(0,9),range('a','z'),range('A','Z'), array('$','_','+','*','!','%','#','@','&','-'))); for($i=0;$i<$maxLen;$i++) { $pass.=$params[rand(0,count($params)-1)]; } unset($params); return $pass; } $myNewPassword = newPass(15) # create and store a password of length 15 # Result => QEc*I#j5#cueUcZ $myNewPassword = newPass() # create and store a password of default length 8
Function, returning a string of length(n) containing random chracters and numbers (specified in array). <? function randomizer($length) { $arr = array("1","2","3","4","5","6","7","8","9","0","q","w","e","r","t", "y","u","i","o","p","a","s","d","f","g","h","j","k","l", "z","x","c","v","b","n","m","Q","W","E","R","T","Y","U", "I","O","P","A","S","D","F","G","H","J","K","L","Z","X", "C","V","B","N","M"); srand((float) microtime() * 1000000); for($i = $length; $i > 0; $i--) { $str .= $arr[rand(0, sizeof($arr))]; } return $str; } ?>
This little function returns a unique time-stamp (microtime) based password/ID (8-digits). function xid() { $uab= 57; $lab= 48; $mic= microtime(); $smic= substr($mic,1,2); $emic= substr($mic,4,6); mt_srand ((double)microtime() * 1000000); $ch= (mt_rand() % ($uab-$lab)) + $lab; $po= strpos($emic, chr($ch)); $emica= substr($emic, 0, $po); $emicb= substr($emic, $po, strlen($emic)); $out= $emica.$smic.$emicb; return $out; }
A simple and 'quick' random password generator of any length. <?php function randGen($len=6) { $possible = 'abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ123456789'; $slen = strlen($possible); $ret = ''; for($i=0; $i<$len; $i++) { $rnd = rand(0, $slen); $ret .= $possible{$rnd}; } return $ret; } ?>