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PHP anti-malicious refresh implementation code_PHP tutorial
- WBOYOriginal
- 2016-07-21 15:37:29766browse
Copy code The code is as follows:
session_start();
$k=$_GET[' k'];
$t=$_GET['t'];
$allowTime = 1800;//anti-refresh time
$ip = get_client_ip();
$allowT = md5($ ip.$k.$t);
if(!isset($_SESSION[$allowT]))
{
$refresh = true;
$_SESSION[$allowT] = time() ;
}elseif(time() - $_SESSION[$allowT]>$allowTime){
$refresh = true;
$_SESSION[$allowT] = time();
}else {
$refresh = false;
}
?>
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