Home > Backend Development > PHP Tutorial > 错误500 ;End of script output before headers: index.php

错误500 ;End of script output before headers: index.php

WBOY
Release: 2016-06-23 13:07:12
Original
7895 people have browsed it

ThinkPHP框架,用curl爬取某网站用ajax生成的分页数据,脚本最大执行时间设置为0.运行脚本一段时间后浏览器显示错误500: ,apache错误日志报错:End of script output before headers: index.php。 代码如下:

public function multi(){		$page = 128;//ajax的分页数		$max_size = 10;//并发数		//url数组		$url_arr = array();		//生成url数组		for($i = 1;$i <= $page; $i++){			$url = 'http://www.wdzj.com/front_select-plat?params=&sort=0&currPage=';			$url .= $i;			$url_arr[] = $url;		}		$mh = curl_multi_init();		//每次只放出$max_size大小的url用来初始化		$count = count($url_arr);		for($i=0;$i<$count;$i++){			$ch = curl_init();			curl_setopt($ch, CURLOPT_URL, $url_arr[$i]);			curl_setopt($ch, CURLOPT_HEADER, 0);			curl_setopt($ch, CURLOPT_TIMEOUT, 5);			curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36');			curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);			curl_multi_add_handle($mh, $ch);			$requestMap[] = $ch;			if(count($requestMap)<$max_size && ++$i != $count) continue;//保证数组中每次有$max_size个请求且请求的url还没有用完			$active = null;			//执行批处理句柄			do{				$mrc = curl_multi_exec($mh, $active);			}while($mrc == CURLM_CALL_MULTI_PERFORM);			while($active && $mrc == CURLM_OK){				if(curl_multi_select($mh) != -1){					do{						$mrc = curl_multi_exec($mh, $active);					}while($mrc == CURLM_CALL_MULTI_PERFORM);				}			}						$json_arr = array();//存放ajax返回的接口数据			//获取资源并且关闭句柄			foreach($requestMap as $ch){				$json_arr[] = curl_multi_getcontent($ch);// 				file_put_contents($i.'.txt', $json);				$error = curl_error($ch);				if($error != '') exit('发生了错误:'.$error);				curl_multi_remove_handle($mh, $ch);			}			unset($requestMap);		}		curl_multi_close($mh);		file_put_contents('1.txt', json_encode($json_arr));	}
Copy after login


回复讨论(解决方案)

打开 php 的错误显示,500 多半是被错误信息憋死的

从代码上看,最大的可能是内存不足

你好,平常没有怎么去接触错误显示的设置。 照网上设置,重启apache后。再执行,还是那种错误。我附上apache的完整点的错误日志吧,不过自己看不明白。

[Thu May 05 17:08:52.673028 2016] [core:warn] [pid 20268:tid 320] AH00098: pid file D:/phpStudy/Apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?[Thu May 05 17:08:52.811036 2016] [mpm_winnt:notice] [pid 20268:tid 320] AH00455: Apache/2.4.10 (Win32) OpenSSL/1.0.1i mod_fcgid/2.3.9 configured -- resuming normal operations[Thu May 05 17:08:52.811036 2016] [mpm_winnt:notice] [pid 20268:tid 320] AH00456: Apache Lounge VC9 Server built: Jul 19 2014 13:20:51[Thu May 05 17:08:52.811036 2016] [core:notice] [pid 20268:tid 320] AH00094: Command line: 'D:\\phpStudy\\Apache\\bin\\httpd.exe -d D:/phpStudy/Apache'[Thu May 05 17:08:52.814036 2016] [mpm_winnt:notice] [pid 20268:tid 320] AH00418: Parent: Created child process 21132[Thu May 05 17:08:54.476131 2016] [mpm_winnt:notice] [pid 21132:tid 336] AH00354: Child: Starting 150 worker threads.[Thu May 05 17:15:20.696222 2016] [core:error] [pid 21132:tid 1724] [client 127.0.0.1:60080] End of script output before headers: index.php
Copy after login

从代码上看,最大的可能是内存不足



我也一直在看运行过程中的内存,一直没有超过百分之八十


从代码上看,最大的可能是内存不足



我也一直在看运行过程中的内存,一直没有超过百分之八十


我再改下代码吧

系统内存 和 php 可用内存 不是一个概念
你就是个 500,神仙也不知道是怎么回事

php.ini 中令display_errors=On 打开错误提示功能再说吧

开启错误提示

<?phpini_set('display_errors','on');error_reporting(E_ALL);?>
Copy after login

系统内存 和 php 可用内存 不是一个概念
你就是个 500,神仙也不知道是怎么回事


额,是curl_multi_select()函数的问题,删掉那部分就可以了,不过照着参考文档上写的,都有问题,这我就不明白了。内存的不足的问题是在后面出现了,也解决了。多谢额。结贴
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template