首页 / 网页编程 / PHP / php实现httpRequest的方法
本文实例讲述了php实现httpRequest的方法。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,试了不少方法。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:
复制代码 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,$post="",$method="GET",$limit=0,$returnHeader=FALSE,$cookie="",$bysocket=FALSE,$ip="",$timeout=15,$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/1.0
";
$out .= "Accept: */*
";
//$out .= "Referer: $boardurl
";
$out .= "Accept-Language: zh-cn
";
$out .= "Content-Type: application/x-www-form-urlencoded
";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]
";
$out .= "Host: $host
";
$out .= "Content-Length: ".strlen($post)."
";
$out .= "Connection: Close
";
$out .= "Cache-Control: no-cache
";
$out .= "Cookie: $cookie
";
$out .= $post;
} else {
$out = "GET $path HTTP/1.0
";
$out .= "Accept: */*
";
//$out .= "Referer: $boardurl
";
$out .= "Accept-Language: zh-cn
";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]
";
$out .= "Host: $host
";
$out .= "Connection: Close
";
$out .= "Cookie: $cookie
";
}
$fp = fsockopen(($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 == "
" || $h == "
")) 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:
复制代码 代码如下:echo httpRequest("http://www.baidu.com");
希望本文所述对大家的php程序设计有所帮助。