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Automatic Password Generation in PHP

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Sometimes you need to generate passwords for customers automatically when a new account is created. This code allows you choose the desired length and strength for the password and it is very flexible.

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  1. <?php
  2. function GeneratePassword($length=8, $strength=0){
  3.     $vowels = 'aeuy';
  4.     $consonants = 'bdghjmnpqrstvz';
  5.     if($strength >= 1) $consonants .= 'BDGHJLMNPQRSTVWXZ';
  6.     if($strength >= 2) $vowels .= 'AEUY';
  7.     if($strength >= 3) $consonants .= '12345';
  8.     if($strength >= 4) $consonants .= '67890';
  9.     if($strength >= 5) $vowels .= '@#$%';
  10.  
  11.     $password = '';
  12.     $alt = time() % 2;
  13.     for($i = 0; $i < $length; $i++){
  14.         if($alt == 1){
  15.             $password .= $consonants[(rand() % strlen($consonants))];
  16.             $alt = 0;
  17.         }else{
  18.             $password .= $vowels[(rand() % strlen($vowels))];
  19.             $alt = 1;
  20.         }
  21.     }
  22.     return $password;
  23. }
  24. ?>

URL: http://www.apphp.com/index.php?snippet=php-generate-a-password

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