PHP.ini默认配置下,用file_get_contents读取https的链接,就会如下错误:
Warning: fopen() [function.fopen]: Unable to find the wrapper “https” – did you forget to enable it when you configured PHP?
解决方案有3:
1.windows下的PHP,只需要到php.ini中把extension=php_openssl.dll前面的;删掉,重启服务就可以了.
2.linux下的PHP,必须安装openssl模块,安装好了以后就可以访问了.
安装方法:
OpenSSL库的安装
官网:http://www.openssl.org
下载页面:http://www.openssl.org/source/
选择最新版本下载
http://www.openssl.org/source/openssl-1.0.0a.tar.gz
解压:tar –zxvf openssl-1.0.0d.tar.gz,解压目录为:openssl-1.0.0d
然后进入到 cd openssl-1.0.0d,进行配置、编译、安装
配置: ./configure或./config
编译
make
安装
make install
3.如果服务器你不能修改配置的话,那么就使用curl函数来替代file_get_contents函数,当然不是简单的替换啊,还有相应的参数配置才能正常使用curl函数.
对curl函数封装如下:
- function http_request($url,$timeout=30,$header=array()){
- if (!function_exists('curl_init')) {
- throw new Exception('server not install curl');
- }
- $ch = curl_init();
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
- curl_setopt($ch, CURLOPT_HEADER, true);
- curl_setopt($ch, CURLOPT_URL, $url);
- curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
- if (!emptyempty($header)) {
- curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
- }
- $data = curl_exec($ch);
- list($header, $data) = explode("rnrn", $data);
- $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
- if ($http_code == 301 || $http_code == 302) {
- $matches = array();
- preg_match('/Location:(.*?)n/', $header, $matches);
- $url = trim(array_pop($matches));
- curl_setopt($ch, CURLOPT_URL, $url);
- curl_setopt($ch, CURLOPT_HEADER, false);
- $data = curl_exec($ch);
- }
- if ($data == false) {
- curl_close($ch);
- }
- @curl_close($ch);
- return $data;
- }
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