PHP编程:php实现httpRequest的方法
《php实现httpRequest的方法》要点: PHP应用本篇章节讲解php实现httpRequest的办法.分享给大家供大家参考.具体如下: 想从学校图书馆的网站上抓取数据处理之后在返回给浏览器,试了不少办法.首先试了http_request(),但是这个学院pecl_http支持,后来又试了网上流传甚广的class HttpRequest,可能是我不会使用,也失败了.后来看到了函数httpRequest($url,$post='',$method='GET',$limit=0,$returnHeader=FALSE,$cookie='',$bysocket=FALSE,$ip='',$timeout=15,$block=TRUE),用它成功了,因此贴出来分享一下.函数代码如下:
代码如下:
<?php?
??? /** ??? * Respose A Http Request ??? * ??? * @param string $url ??? * @param array $post ??? * @param string $method ??? * @param bool $returnHeader ??? * @param string $cookie ??? * @param bool $bysocket ??? * @param string $ip ??? * @param integer $timeout ??? * @param bool $block ??? * @return string Response ??? */? ??? function httpRequest($url,$block=TRUE) {? ?????? $return = '';? ?????? $matches = parse_url($url);? ?????? !isset($matches['host']) && $matches['host'] = '';? ?????? !isset($matches['path']) && $matches['path'] = '';? ?????? !isset($matches['query']) && $matches['query'] = '';? ?????? !isset($matches['port']) && $matches['port'] = '';? ?????? $host = $matches['host'];? ?????? $path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';? ?????? $port = !empty($matches['port']) ? $matches['port'] : 80;? ?????? if(strtolower($method) == 'post') {? ?????????? $post = (is_array($post) and !empty($post)) ? http_build_query($post) : $post;? ?????????? $out = "POST $path HTTP/1.0rn";? ?????????? $out .= "Accept: */*rn";? ?????????? //$out .= "Referer: $boardurlrn";? ?????????? $out .= "Accept-Language: zh-cnrn";? ?????????? $out .= "Content-Type: application/x-www-form-urlencodedrn";? ?????????? $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]rn";? ?????????? $out .= "Host: $hostrn";? ?????????? $out .= 'Content-Length: '.strlen($post)."rn";? ?????????? $out .= "Connection: Closern";? ?????????? $out .= "Cache-Control: no-cachern";? ?????????? $out .= "Cookie: $cookiernrn";? ?????????? $out .= $post;? ?????? } else {? ?????????? $out = "GET $path HTTP/1.0rn";? ?????????? $out .= "Accept: */*rn";? ?????????? //$out .= "Referer: $boardurlrn";? ?????????? $out .= "Accept-Language: zh-cnrn";? ?????????? $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]rn";? ?????????? $out .= "Host: $hostrn";? ?????????? $out .= "Connection: Closern";? ?????????? $out .= "Cookie: $cookiernrn";? ?????? }? ?????? $fp = fsockopen(($ip ? $ip : $host),$port,$errno,$errstr,$timeout);? ?????? if(!$fp) return ''; else {? ?????????? $header = $content = '';? ?????????? stream_set_blocking($fp,$block);? ?????????? stream_set_timeout($fp,$timeout);? ?????????? fwrite($fp,$out);? ?????????? $status = stream_get_meta_data($fp);? ?????????? if(!$status['timed_out']) {//未超时? ?????????????? while (!feof($fp)) {? ?????????????????? $header .= $h = fgets($fp);? ?????????????????? if($h && ($h == "rn" ||? $h == "n")) break;? ?????????????? }? ? ?????????????? $stop = false;? ?????????????? while(!feof($fp) && !$stop) {? ?????????????????? $data = fread($fp,($limit == 0 || $limit > 8192 ? 8192 : $limit));? ?????????????????? $content .= $data;? ?????????????????? if($limit) {? ?????????????????????? $limit -= strlen($data);? ?????????????????????? $stop = $limit <= 0;? ?????????????????? }? ?????????????? }? ?????????? }? ??????? fclose($fp);? ?????????? return $returnHeader ? array($header,$content) : $content;? ?????? }? ??? }? ?> 调用也很简单的.简单的例子:
代码如下:
echo httpRequest('http://www.baidu.com');
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