php產生隨機字串(自訂純數字、純字母或數字字母混合)
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-
//生成随机字符串 - function rand_zifu($what,$number){
- $string='';
- for($i = 1; $i <= $number; $i ){
- //混合
- $panduan=1;
- if($what == 3){
- if(rand(1,2)==1){
- $what=1;
- }else{
- $what=2;
- }
- $panduan=2;
- }
//数字 - if($what==1){
- $string.=rand(0,9);
- }elseif($what==2){
- //字母
- $rand=rand(0,24);
- $b='a';
- for($a =0;$a <=$rand;$a ){
- $b ;
- }
- $string.=$b;
- }
- if($panduan==2)$what=3;
- }
- return $string;
- }
- echo rand_zifu(3,10);
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