What is include_path?
To include a file in your PHP script you use the include statement. Hard coding the complete file system path in all your include statements is unmaintainable. You cannot expect your application to be installed in the exact same location everywhere. Including the files from a relative path is so much more easier.
Let us write few simple scripts for demonstration purpose.
Create the file mymainfile.php and paste the below code in it.
/* @file mymainfile.php
echo "This is the main file" . "\n";