取得随机字符串
作用:取得随机字符串
<?PHP
/*
作用:取得随机字符串
参数:
1、(int)$length = 32 #随机字符长度,默认为32
2、(int)$mode = 0 #随机字符类型,0为大小写英文和数字,1为数字,2为小写子木,3为大写字母,4为大小写字母,5为大写字母和数字,6为小写字母和数字
返回:取得的字符串
使用:
$code = new activeCodeObj;
$str = $code->getCode($length, $mode);
*/
class activeCodeObj
{
function getCode ($length = 32, $mode = 0)
{
switch ($mode) {
case '1':
$str = '1234567890';
break;
case '2':
$str = 'abcdefghijklmnopqrstuvwxyz';
break;
case '3':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case '4':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
break;
case '5':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
break;
case '6':
$str = 'abcdefghijklmnopqrstuvwxyz1234567890';
break;
default:
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
break;
}
$result = '';
$l = strlen($str);
for($i = 0;$i < $length;$i ++){
$num = rand(0, $l);
$result .= $str[$num];
}
return $result;
}
}
?>