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Create Password in PHP

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  1. function create_password($pw_length = 8, $use_caps = true, $use_numeric = true, $use_specials = true) {
  2. 	$caps = array();
  3. 	$numbers = array();
  4. 	$num_specials = 0;
  5. 	$reg_length = $pw_length;
  6. 	$pws = array();
  7. 	for ($ch = 97; $ch <= 122; $ch++) $chars[] = $ch; // create a-z
  8. 	if ($use_caps) for ($ca = 65; $ca <= 90; $ca++) $caps[] = $ca; // create A-Z
  9. 	if ($use_numeric) for ($nu = 48; $nu <= 57; $nu++) $numbers[] = $nu; // create 0-9
  10. 	$all = array_merge($chars, $caps, $numbers);
  11. 	if ($use_specials) {
  12. 		$reg_length =  ceil($pw_length*0.75);
  13. 		$num_specials = $pw_length - $reg_length;
  14. 		if ($num_specials > 5) $num_specials = 5;
  15. 		for ($si = 33; $si <= 47; $si++) $signs[] = $si;
  16. 		$rs_keys = array_rand($signs, $num_specials);	
  17. 		foreach ($rs_keys as $rs) {
  18. 			$pws[] = chr($signs[$rs]);
  19. 		}
  20. 	} 
  21. 	$rand_keys = array_rand($all, $reg_length);
  22. 	foreach ($rand_keys as $rand) {
  23. 		$pw[] = chr($all[$rand]);
  24. 	}	
  25. 	$compl = array_merge($pw, $pws);	
  26. 	shuffle($compl);
  27. 	return implode('', $compl);
  28. }

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