Having to change 50 different pages to fix a link in your menu or adding a menu item in your footer can be quite a daunting task and quite frankly, not something you will want to do often. Using includes is a simple method of removing common parts of your code into a separate file and including them where you need it. It’s very simple to implement and you’ll be left wondering why you didn’t think of this when you were coding that big site.
There are two methods: PHP includes and SSI/ASP includes. Both are very similar except for the syntax of course.
PHP Includes
The best option is to use the PHP include() function.
The Syntax
< ?php include('/tips-and-tricks/directory/file.html'); ?>
How to use it
Here’s your index.php file (note that all your files using the php include() function must have the .php extension)
…
< ?php include('navigation.inc'); ?>
And this would be your navigation.inc file (note that your included file can have the extension you want – .html, .php, .inc, .whatever)
SSI and ASP
There's is also the SSI version (Server-Side Includes). It is also the same syntax for ASP includes
The Syntax
Using a virtual path (most commonly used)
< !––#include virtual="/directory/page.html" ––>
Using a relative path
< !––#include file="page.html" ––>
How to use
Here's your index.shtml or index.asp file (note that all your files using the SSI or ASP include function must have either the .shtml or .asp extension)
...
< !––#include virtual="/navigation.inc" ––>
And this would be your navigation.inc file (note that your included file can have the extension you want - .html, .asp, .inc, .whatever)
