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Random Password Generator PHP Class

/ Published in: PHP
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I rewrote [this snippet](http://snipplr.com/view/15402/php-password-generator/).

Usage:

$password1 = new Password;
$password2 = new Password;

echo '<p>' . $password1->generate() . '</p>';
echo '<p>' . $password2->generate(array('length' => 50)) . '</p>';

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  1. <?php
  2. /**
  3. * Generate a random password
  4. */
  5. class Password
  6. {
  7. 	/**
  8. 	 * Generate the new password
  9. 	 *
  10. 	 * @access public
  11. 	 * @param array $params
  12. 	 * @return string
  13. 	 **/
  14. 	public function generate($params = array())
  15. 	{
  16.  
  17. 		$length     = (!array_key_exists('length', $params))     ? 15     :     $params['length'];
  18. 		$use_lower  = (!array_key_exists('use_lower', $params))  ? TRUE   :  $params['use_lower'];
  19. 		$use_upper  = (!array_key_exists('use_upper', $params))  ? TRUE   :  $params['use_upper'];
  20. 		$use_number = (!array_key_exists('use_number', $params)) ? TRUE   : $params['use_number'];
  21. 		$use_custom = (!array_key_exists('use_custom', $params)) ? '-_()' : $params['use_custom'];
  22.  
  23. 		$upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  24. 		$lower = "abcdefghijklmnopqrstuvwxyz";
  25. 		$number = "0123456789";
  26.  
  27. 		$seed_length = 0;
  28. 		$seed        = '';
  29.  
  30. 		if($use_upper === TRUE){
  31. 			$seed_length += 26;
  32. 			$seed .= $upper;
  33. 		}
  34. 		if($use_lower === TRUE){
  35. 			$seed_length += 26;
  36. 			$seed .= $lower;
  37. 		}
  38. 		if($use_number === TRUE){
  39. 			$seed_length += 10;
  40. 			$seed .= $number;
  41. 		}
  42. 		if(!empty($use_custom)){
  43. 			$seed_length +=strlen($use_custom);
  44. 			$seed .= $use_custom;
  45. 		}
  46. 		for($i = 1; $i <= $length; $i++){
  47. 			$password .= $seed{rand(0,$seed_length-1)};
  48. 		}
  49. 		return $password;
  50. 	} // End of generate
  51. } // End of Class Password
  52.  
  53. ?>

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