php preg match 仅获取最后匹配的字符串答案

【问题标题】：php preg match get only last matched stringphp preg match 仅获取最后匹配的字符串
【发布时间】：2016-04-30 09:51:23
【问题描述】：

我需要获取最后的 HTTP 标头。我的字符串是：

HTTP/1.1 302 Moved Temporarily
Date: Sat, 30 Apr 2016 09:48:56 GMT
Server: Apache
X-Powered-By: PHP/5.5.34
Location: 2.php
Content-Length: 0
Content-Type: text/html

HTTP/1.1 302 Moved Temporarily
Date: Sat, 30 Apr 2016 09:48:57 GMT
Server: Apache
X-Powered-By: PHP/5.5.34
Location: 3.php
Content-Length: 0
Content-Type: text/html

HTTP/1.1 200 OK
Date: Sat, 30 Apr 2016 09:48:57 GMT
Server: Apache
X-Powered-By: PHP/5.5.34
Transfer-Encoding: chunked
Content-Type: text/html

但我需要获取最后一个标题。我试图用 \n\n 分解这个字符串，但我无法得到结果。是否可以使用 preg_match 做到这一点？

【问题讨论】：

标签： php curl preg-match explode

【解决方案1】：

明白了！我需要用这段代码来爆炸它：

explode("\r\n\r\n", $header);

【讨论】：

【解决方案2】：

使用preg_split和array_pop函数的解决方案：

// $headers is your initial string
$headers_splitted = preg_split("/\R{2}/", $headers);

print_r(array_pop($headers_splitted));

输出：

HTTP/1.1 200 OK
Date: Sat, 30 Apr 2016 09:48:57 GMT
Server: Apache
X-Powered-By: PHP/5.5.34
Transfer-Encoding: chunked
Content-Type: text/html

【讨论】：