PHP Random string password generation

2. /**
4. * @param string $len length
6. * @param string $type strings type
8. * 0 Letters 1 numbers other mixes
10. * @param string $addChars extra characters
12. * @return String
14. */
16. function leipi_rand_string ($len =6,$type =",$addChars =") {
18. $str =";
20. switch ($type) {
22. Case 0:
24. $chars =' abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz '.   $addChars;
26. Break ;
28. Case 1:
30. $chars = str_repeat (' 0123456789 ', 3);
32. Break ;
34. Case 2:
36. $chars =' abcdefghijklmnopqrstuvwxyz '.   $addChars;
38. Break ;
40. Case 3:
42. $chars =' abcdefghijklmnopqrstuvwxyz '.   $addChars;
44. Break ;
46. Case 4:
48. $chars = "Some random Chinese can be entered here. "  $addChars;
50. Break ;
52. Default:
54. //default is to remove the easily confusing characters Ooll and number 01, to add please use the Addchars parameter
56. $chars =' ABCDEFGHIJKMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789 '.   $addChars;
58. Break ;
60. }
62. if ($len >10) {//bit too long repeating string a certain number of times
64. $chars = $type ==1?  str_repeat ($chars,$len): str_repeat ($chars, 5);
66. }
68. if ($type!=4) {
70. $chars = str_shuffle ($chars);
72. $str = substr ($chars, 0,$len);
74. }else{
76. //Chinese random word
78. For ($i =0; $i <$len; $i + +) {
80. $str. = Msubstr ($chars, Floor (Mt_rand (0,mb_strlen ($chars,' Utf-8 ')-1)), 1);
82. }
84. }
86. return $str;
88. }

PHP Random string password generation