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random pass generator

/ Published in: PHP
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  1. function generatePassword ($length = 8) {
  2.   $password = "";
  3.   $possible = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-$!?]["; 
  4.  
  5.   $i = 0; 
  6.   // add random characters to $password until $length is reached
  7.   while ($i < $length) { 
  8.     // pick a random character from the possible ones
  9.     $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
  10.     // we don't want this character if it's already in the password
  11.     if (!strstr($password, $char)) { 
  12.       $password .= $char;
  13.       $i++;
  14.     }
  15.   }
  16.   return $password;
  17. }

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