PHP 防止外部提交表单

[PHP]代码

$referer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : NULL;$host = $_SERVER['HTTP_HOST'];echo '提交过来的地址：'.$referer;echo '<br>';echo '本站域名：'.$host;echo '<br>';echo substr($referer,7,strlen($host));if(substr($referer,7,strlen($host)) != $host){ echo '非法操作';}else{ echo '正常操作';}

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