PHP随机数类代码示例:
- ?php
- class getRandstrClass{
-
function getCode ($length = 32, $mode = 0) {
- switch ($mode) {
- case '1':
-
$str = '1234567890';
- break;
- case '2':
-
$str = 'abcdefghijklmnopqrstuvwxyz';
- break;
- case '3':
-
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
- break;
- case '4':
-
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZa
bcdefghijklmnopqrstuvwxyz';break;
- case '5':
-
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
- break;
- case '6':
-
$str = 'abcdefghijklmnopqrstuvwxyz1234567890';
- break;
- default:
-
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcde
fghijklmnopqrstuvwxyz1234567890';
- break;
- }
-
$randString = '';
-
$len = strlen($str)-1;
-
for($i = 0;$i $length;$i ++){
-
$num = mt_rand(0, $len);
-
$randString .= $str[$num];
- }
- return $randString ;
- }
- }
- /* 使用方法
-
$code = new getRandstrClass();
-
$length = 4;
-
$mode = 0;
-
$str = $code->getCode($length, $mode);
- echo $str;
-
$code = NULL;
- */
-
?>
以上这段代码就是PHP随机数类的具体使用方法。
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