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Random password generator

/ Published in: PHP
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This function can be used to generate random passwords with specified length. Also, can use specified list of characters ($index) and generate passwords with only lower or only upper case characters.

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  1. function random_password($lenght=6, $text_transform='uppercase') {
  2.     $index = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  3. 	//build array 
  4. 	for($i = 0; $i < mb_strlen($index); $i++) {
  5. 		$signs[] = mb_substr($index, $i, 1);
  6. 	}
  7. 	shuffle($signs);
  8. 	$password = '';
  9. 	for($i = 0; $i <= $lenght; $i++) {
  10. 		$password .= $signs[$i];
  11. 	}
  12. 	if($text_transform == 'lowercase') {
  13. 		return mb_strtolower($password);
  14. 	}
  15. 	elseif($text_transform == 'uppercase') {
  16. 		return mb_strtoupper($password);
  17. 	}
  18. 	else {
  19. 		return $password;
  20. 	}
  21. }

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