php判断远程资源是否存在
从2013年创立创新互联建站专注于”帮助中小企业+互联网”, 也是目前成都地区具有实力的互联网服务商。团队致力于为企业提供--站式网站建设、移动端应用( H5手机营销、app开发定制、微信开发)、软件开发、信息化解决方案等服务。
返回结果:
Array ( [0] => HTTP/1.1 404 Not Found [1] => Date: Tue, 14 Mar 2017 10:58:00 GMT [2] => Server: Apache [3] => Vary: User-Agent,Accept-Encoding [4] => Connection: close [5] => Content-Type: text/html ) Array ( [0] => HTTP/1.1 200 OK [1] => Date: Tue, 14 Mar 2017 10:58:00 GMT [2] => Server: Apache [3] => Last-Modified: Wed, 09 Nov 2016 08:57:06 GMT [4] => ETag: "2162a05-13f5-540da70f97c80" [5] => Accept-Ranges: bytes [6] => Content-Length: 5109 [7] => Vary: User-Agent [8] => Connection: close [9] => Content-Type: p_w_picpath/png ) 可以看到返回的http状态信息组成的一维数组.且第一个数组单元为响应状态信息.于是乎,通过获取到的状态码,用来判断远程资源是否存在。
$statusCode=substr($get1[0], 9, 3); if($statusCode == 200 || $statusCode == 304){ echo "It's exists." }else{ echo "It's not exists." }这里需要注意get请求https时,需要关闭证书校验的问题
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