Include Vs Require

The only difference in Include & Require:

• Include show warning if any problem in file loading and script will continue.
• Require show fatal error and if any problem in file loading its stop the script.

Tips:

• Use Include when file is not necessary in application so its continue script if there is any problem in file.
• Use Require when file is important for an application so its stop the script if there is any problem in file.

Require Methods

Two different method for require

Require():

Require() method use for including multiple files,its takes all content of file and copies it in the specified.
syntax for require() method as below:

<?php
require 'file_name.php';
?>

file_name.php means path of file

Require_once():

Require_once is similar as require() method ,only different is that if the code from a file has already been included, it will not be included again
syntax for require_once method as below:

<?php
require_once 'file_name.php';
?>