PHP to determine normal access and external access examples

Source: Internet
Author: User

This article mainly introduces PHP to judge the normal access and external access methods, the need for friends can refer to the

PHP to determine the normal access and external access code is as follows: <?php session_start ();  if (Isset ($_post[' check ')) &&!empty ($_post[' name ')) {if ($_post[' check '] = = $_session[' check ') {echo "normal access";  }else{echo "External access";  } $token = MD5 (Uniqid (rand (), true);  $_session[' check ' = $token; ?> <form method= "Post action=" "> <input type=" text "name=" name "/> <input type=" text "name=" Check "va Lue= "<?= $token;? > "> <input type=" Submit ">
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