Include and Require
If you need to separate a file into many parts and then want to merge them into one PHP file then you need to use PHP include,
and they are:
1. include
2. include_once
3. require
4. require_once
PHP include
This is used while needed to include a file into another file,
** Include a file that can be used much time in a page or file.
Example
<?php
include(‘header.php’); // or include can be written as include ‘header.php’;
echo “Its the body part”;
include(‘footer.php’);
?>
PHP Include Once (include_once)
If a file needed to include in a file only for single time then include once is used, like functions page
** Include a file can be used to include a file only one time in a page or file.
Example (include_once)
<?php
include_once(‘function.php’);
echo “Perform the codding activity”;
?>
PHP require
while a file is required to execute a code then php require function is used, if the file not get then the function will not let execute the code
<?php
require(‘db_function.php’);
echo “Perform the database activity”;
?>
PHP Require Once (include_once)
If a file needed to include in a file only for single time and the file is required to execute the code then require once is used, like connection page.
Example (include_once)
<?php
require_once(‘connection.php’);
echo “Perform the database activity”;
?>
I wish you get a clear view on PHP Include , Require , Include Once (include_once) and Require Once (require_once)
Thanks for Reading