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:
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<?php
$ADMIN = array (
'defaulturl' => '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' ]);
?>
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希望本文所述对大家的php程序设计有所帮助。