php判断正常访问和外部访问

复制代码 代码如下:

<?php

session_start();

if(isset($_POST['check'])&&!empty($_POST['name'])){

if($_POST['check'] == $_SESSION['check']){

echo "正常访问";

}else{

echo "外部访问";

}

}

$token = md5(uniqid(rand(),true));

$_SESSION['check'] = $token;

?>

<form method="post" action="">

<input type="text" name="name"/>

<input type="text" name="check" value="<?=$token;?>">

<input type="submit">