php file_get_contents returns empty invalid solution_PHP tutorial

The file_get_contents function is mostly used to collect content on remote servers, but before using the file_get_contents function, we must turn on allow_url_fopen in php.ini. ​

Problem Description

fopen(), file_get_contents(), getimagesize(), etc. cannot obtain the content on the network normally. The specific performance is that if the parameter is a URL, it will return a null value

If it is windows, you can find it

allow_url_fopen is on

If it is possible in linux

Recompile PHP and remove the –with-curlwrapper parameter - remember to execute make clean before compiling.

We use allow_url_fopen when windows account is not opened

The code is as follows

Copy code

代码如下	复制代码
< ?php $file_contents = file_get_contents(''http://www.bkjia.com/''); echo $file_contents; ?>

< ?php

$file_contents = file_get_contents(''http://www.bkjia.com/'');

echo $file_contents;

代码如下	复制代码
function file_get_content($url) { if (function_exists(‘file_get_contents')) { $file_contents = @file_get_contents($url); } if ($file_contents == ”) { $ch = curl_init(); $timeout = 30; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); } return $file_contents; }

?>

cannot get the value, but we can use function_exists to determine whether this function is available.

The code is as follows	Copy code
function file_get_content($url) { if (function_exists('file_get_contents')) { $file_contents = @file_get_contents($url); } if ($file_contents == ”) { $ch = curl_init(); $timeout = 30; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $file_contents = curl_exec($ch); curl_close($ch); } return $file_contents; }

http://www.bkjia.com/PHPjc/445629.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445629.htmlTechArticleThe file_get_contents function is mostly used to collect content on the remote server, but before using the file_get_contents function, we have to use the file_get_contents function in php.ini Allow_url_fopen must be turned on. Problem description...