复制代码 代码如下:

<?php

$count = 5;

start:

if($count < 5) echo "You can try {$count} time, ";

echo "Put Password: ";

$handle = fopen ("php://stdin","r");

$line = fgets($handle);

if(trim($line) != '123456'){

$count--;

if(!$count) goto error;

goto start;

}

goto success;

error:

echo "Please try after 1 hour!";

goto out;

success:

echo "Logined!";

out:

?>

执行结果：