You can simply enable/disable the php functions allow_url_include and allow_url_fopen by editing the php configuration file. These functions may disabled in the php configuration file of some shared hosting server. You can simply manage these function by creating a custom php.ini file under your public folder.
Here is the way to do that 🙂
Step I : Create/Open php.ini file under the public folder of your domain.
Step II : Add the following lines to enable above php functions.
allow_url_fopen = On
allow_url_include = On
that’s it 🙂