php curl 分离header和body信息

php中可以通过curl来模拟http请求,同时可以获取http response header和body,当然也设置参数可以只获取其中的某一个,当设置同时获取response header和body时候,它们会一同作为结果返回,这时需要我们自己来分离它们。

下面代码是模拟向google一个http GET请求,代码如下:

<?php
function httpGet() { 
    $url = &#39;http://www.google.com.hk&#39;; 
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url); 
    curl_setopt($ch, CURLOPT_HEADER, TRUE);    //表示需要response header 
    curl_setopt($ch, CURLOPT_NOBODY, FALSE); //表示需要response body 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE); 
    curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE); 
    curl_setopt($ch, CURLOPT_TIMEOUT, 120); 
    $result = curl_exec($ch); 
    if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == &#39;200&#39;) { 
        return $result; 
    } 
    return NULL; 
}
?>

调用上述方法后看到如下类似输出：

HTTP/1.1 200 OK

Date: Tue, 09 Jul 2013 14:21:08 GMT

Expires: -1

Cache-Control: private, max-age=0

Content-Type: text/html; charset=UTF-8

Set-Cookie: PREF=ID=75e996a7ad21f47b:FF=0:NW=1:TM=1373379668:LM=1373379668:S=TTLQQN-jwGDYnkkY; expires=Thu, 09-Jul-2015 14:21:08 GMT; path=/; domain=.google.com.hk

Set-Cookie: NID=67=PPu7FfFeuZqwfsrUifgzjidX4JZxxCPLe9xFHjdXhfHpzs3gaykFSH5uGXy2esWTlp_rdqIYkjFDMollzI_sA-8owxD3mDh6KCRwdMa9-g5VChj0E5XAGNjo9d-sZfLN; expires=Wed, 08-Jan-2014 14:21:08 GMT; path=/; domain=.google.com.hk; HttpOnly

P3P: CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."

Server: gws

X-XSS-Protection: 1; mode=block

X-Frame-Options: SAMEORIGIN

Transfer-Encoding: chunked

<script>(function(){<p>window.google={kEI:"VBzcUdWuHOmtiQf64IHoCw",getEI:function(a){for(var b;a&&(!a.getAttribute||!(b=a.getAttribute("eid")));<p>……<p>这里可以看到结果中header和body信息是在一起的,那么如何分离它们呢,方法有二种,一是通过curl自带的curl_getinfo()方法获取头的长度，然后使用substr来分割字符串,示例代码如下:<pre class="brush:php;toolbar:false">$response = curl_exec($ch); if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == &amp;#39;200&amp;#39;) { $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE); $header = substr($response, 0, $headerSize); $body = substr($response, $headerSize); }</pre><p>第二种方法基于header和body是通过两个回车换行来分割的,所以可以通过如下代码实现:<pre class="brush:php;toolbar:false">$response = curl_exec($ch); if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == &amp;#39;200&amp;#39;) { list($header, $body) = explode(&quot;rnrn&quot;, response, 2); }</pre><p><br /> <p>文章地址:<p>转载随意^^请带上本文地址! </script>