php get_headers 与get_meta_tags函数实例
get_headers是获取http头信息，get_meta_tags是获取网页的description,abstract,keywords等信息.
*/ $url = 'http://HdhCmsTestphpfensi测试数据' ; //定义url print_r(get_headers( $url )); //无格式获取 print_r(get_headers( $url ,1)); //带上格式获取 /* array ( [0] => http/1.1 200 ok [1] => connection: close [2] => date: sat, 11 dec 2010 05:43:46 gmt [3] => content-length: 69617 [4] => content-type: text/html [5] => content-location: http://HdhCmsTestphpfensi测试数据/index.html [6] => last-modified: sat, 11 dec 2010 05:19:51 gmt [7] => accept-ranges: bytes [8] => etag: "e8be4b9f398cb1:6c66" [9] => server: microsoft-iis/6.0 [10] => x-powered-by: asp.net ) array ( [0] => http/1.1 200 ok [connection] => close [date] => sat, 11 dec 2010 05:43:47 gmt [content-length] => 69617 [content-type] => text/html [content-location] => http://HdhCmsTestphpfensi测试数据/index.html [last-modified] => sat, 11 dec 2010 05:19:51 gmt [accept-ranges] => bytes [etag] => "e8be4b9f398cb1:6c66" [server] => microsoft-iis/6.0 [x-powered-by] => asp.net ) get_meta_tags($url); 获取指定网页的description,abstract,keywords等信息 */ $tags =get_meta_tags( 'http://HdhCmsTestphpfensi测试数据/' ); //提取meta标签 print_r( $tags ) //输出数组全部内容 /* array ( [description] => 网页制作教程网提供专业网页设计教程与网页制作教程包括有photoshop教程,flash,html,css教程,dreamweaver,fireworks,asp,php教程,jsp教程,asp.net,网站建设,网站开发,网页特效,平面设计,个人网站,网页素材 [ abstract ] => 提供最新的网页制作教程、网页设计教程、网页特效，为个人网站提供网页素材模板和网页视频学习。 [keywords] => 网页设计教程,网页制作教程,网页学习,photoshop,flash,html,css,dreamweaver,fireworks,asp,php,jsp,asp.net,网页特效,平面设计,网页素材 )注意:使用该函数需要把 php.ini里面的allow_url_fopen = on,才能使用.
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