File_get_contents cannot obtain the URL with Port

First, let's take a look at the file_get_contents () function. The official introduction says it reads the entire file into a string.

Example

<? Php
Echo file_get_contents ("test.txt ");
?>

Output:

This is a test file with test text.

This function can also be used to obtain the content on the remote server.

File_get_contents ('http: // www.111cn.net ');

This is no problem, but if I bring the port, it will be a problem.

For example:

File_get_contents ('http: // localhost: 100 ');

There is no get.

Solution: disable selinux.

1 Permanent method-server restart required

Modify selinux = disabled in the/etc/SELINUX/config file, and then restart the server.

2. Temporary method-set system parameters

Run the setenforce 0 command.

Appendix:

Setenforce 1 sets SELinux to enforcing mode
Setenforce 0 sets SELinux to permissive mode

Php's allow_url_fopen option is disabled.

The reason is that the allow_url_fopen option of php is disabled in php. ini. We just need to open it.

If you do not have the permission to open allow_url_fopen, we can use the curl function to replace it.