Warning: require_once(): http:// wrapper is disabled in the server configuration by allow_url_include=0

Question

I am trying to include a php file in a page via

  require_once(http://localhost/web/a.php)

I am getting an error

 Warning:         


        

Answer 1

WORDPRESS is having this error mostly:
SOLUTION:
Locate your PHP installed directory on Remote live hosting SERVER or "Local Server"
In case of Windows os
for example if you using xampp or wamp webserver. it will be in xammp directory 'c:\xammp\php'
Note: For Unix/Linux OS, locate your PHP directory in Webserver

Find & Edit PHP.INI file
Find 'allow_url_include'
replace it with value 'on'
allow_url_include=On
Save you php.ini & RESTART you web-server.