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php简单防盗链实现方法

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Release: 2016-06-06 19:50:00
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这篇文章主要介绍了php简单防盗链实现方法,涉及php针对服务器端预定义变量调用及字符串处理的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了php简单防盗链实现方法。分享给大家供大家参考。具体如下:

'http://blog.qita.in/images/banner-header.gif', //盗链返回的地址 'url_1' => 'http://blog.qita.in/file', 'url_2' => 'http://blog.qita.in/file1', ); $okaysites = array( 'http://qita.in', 'http://blog.qita.in', //白名单 'http://blog.qita.in/1.html', ); $reffer = $_SERVER['HTTP_REFERER']; if ($reffer) { $yes = 0; while (list($domain, $subarray) = each($okaysites)) { if (ereg($subarray, "$reffer")) { $yes = 1; } } $theu = 'url_' . $_GET['site']; $file = $_GET['file']; if ($ADMIN[$theu] and $yes == 1) { header("Location: $ADMIN[$theu]/$file"); } else { header("Location: $ADMIN[defaulturl]"); } } else { header("Location: $ADMIN[defaulturl]"); } print_r($_SERVER['HTTP_REFERER']); ?>

希望本文所述对大家的php程序设计有所帮助。

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