PHP Script : Section 04 : How to Combine file in PHP

It's so very different with HTML language to combine file.
In PHP, is easier.
Folow this step.

Step 1. Create file intro-01.php
Content :
Welcome
This is page intro-01

Step 2. Create file intro-02.php
Content:
Welcome
This is page intro-02

Step 3. Create file combine-01.php
Content :
include 'intro-01.php';
include 'intro-02.php';
//This symbol is script for note, not execute
?>
or
require('intro-01.php');
require('intro-02.php');
//This symbol is script for note, not execute
?>
Step 4. Run combine-01.php file with browser
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