php 生成32位随机字符串 用于支付验证 用户注册

复制代码 //32位随机字符串 function randstrpay($length=32) { $rand=''; $randstr= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; $max = strlen($randstr)-1; mt_srand((double)microtime()*1000000); for($i=0;$i<$length;$i++) { $rand.=$randstr[mt_rand(0,$max)]; } return $rand; }

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 //32位随机字符串
function randstrpay($length=32) {
$rand='';
$randstr= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$max = strlen($randstr)-1;
mt_srand((double)microtime()*1000000);
for($i=0;$i<$length;$i++) {
$rand.=$randstr[mt_rand(0,$max)];
}
return $rand;
}