在做一个微博项目中,发布视频需要解析外链获取视频地址信息,
用的是PHP的curl 获取内容,正则解析。
后来测试发现土豆的视频无法解析,其他的都好。
经过反复测试,发现是土豆用了GZIP压缩,于是用gzdecode反解压。
发现本地的wamp 2.1 zlib 库, 网上cn.php.net 搜了解决办法,自定义个函数用gzinflate实现。
下面是代码
if (!function_exists('gzdecode')) { function gzdecode ($data) { $flags = ord(substr($data, 3, 1)); $headerlen = 10; $extralen = 0; $filenamelen = 0; if ($flags & 4) { $extralen = unpack('v' ,substr($data, 10, 2)); $extralen = $extralen[1]; $headerlen += 2 + $extralen; } if ($flags & 8) // Filename $headerlen = strpos($data, chr(0), $headerlen) + 1; if ($flags & 16) // Comment $headerlen = strpos($data, chr(0), $headerlen) + 1; if ($flags & 2) // CRC at end of file $headerlen += 2; $unpacked = @gzinflate(substr($data, $headerlen)); if ($unpacked === FALSE) $unpacked = $data; return $unpacked; } }
希望对大家有用!

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