php get_headers 与get_meta_tags函数实例_php教程_php教程

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://www.vcphp.com'; //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://www.vcphp.com/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://www.vcphp.com/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://www.vcphp.com/'); //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.

(责任编辑：最模板)