问题描述:
只能获得本地文件,还有域名是IP 的地址, 域名的方式获得为空
例子:
1.获得本地文件
file_get_contetns('../1.txt');//可以获得
2.获得IP地址的内容
file_get_contents('http://1.1.1.1');//可以获得
3.域名形式内容不能获得
file_get_contents('http://www.baidu.com');//获得内容为空
4.如果php 代码换成 curl形式可以获得
环境:
ubuntu:13.10
php:PHP 5.3.17
allow_url_fopen = on 是打开的
safe_mode:disabled
在命令行下面:
curl http://www.baidu.com 是没问题的
请大家帮忙分析下问题出在什么地方?
补充一点:
如果我把域名host 指向 127.0.0.1 也没办法获得内容
题主可以读读PHP手册file_get_contents
函数下的用户评论,会对你解决问题有帮助。
举几个栗子:
onglipo at hotmail dot com (08-Mar-2012 01:27)
$header = file_get_contents('http://www.example.com/faq.jsp');
echo $header;
Fails with 500 Internal Server Error.
$opts = array('http'=>array('header' => "User-Agent:MyAgent/1.0\r\n"));
$context = stream_context_create($opts);
$header = file_get_contents('http://www.example.com/faq.jsp',false,$context);
//$header = file_get_contents('http://www.polama.com/faq.jsp');
echo $header;
Works!
godwraith01 at yahoo dot com (11-Oct-2011 12:16)
I experienced a problem in using hostnames instead straight IP with some server destinations.If i use
file_get_contents
("www.jbossServer.example/app1",...)
i will get an 'Invalid hostname' from the server i'm calling.This is because
file_get_contents
probably will rewrite your request after getting the IP, obtaining the same thing as :
file_get_contents
("xxx.yyy.www.zzz/app1",...)And you know that many servers will deny you access if you go through IP addressing in the request.
With cURL this problem doesn't exists. It resolves the hostname leaving the request as you set it, so the server is not rude in response.