How does the INCLUDE statement work in PHP?

How does the INCLUDE statement work in PHP?

PHP Include Files. The include (or require) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses the include statement.

How to include and require a file in PHP?

Assume we have a file called “vars.php”, with some variables defined: Then, if we include the “vars.php” file, the variables can be used in the calling file: echo “I have a $color $car.”; The require statement is also used to include a file into the PHP code.

How are PHP functions used to include PHP files?

There are two PHP functions which can be used to included one PHP file into another PHP file. This is a strong point of PHP which helps in creating functions, headers, footers, or elements that can be reused on multiple pages. This will help developers to make it easy to change the layout of complete website with minimal effort.

How to include a menu in a PHP file?

Assume you want to create a common menu for your website. Then create a file menu.php with the following content. Now create as many pages as you like and include this file to create header. For example now your test.php file can have following content.

What happens if you include the same file in PHP?

If you accidentally include the same file (typically functions or classes files) more than one time within your code using the include or require statements, it may cause conflicts. To prevent this situation, PHP provides include_once and require_once statements.

What happens when you include a PHP script in a PHP file?

Suppose we’ve a ‘my_functions.php’ file with the following code: Here’s is the PHP script within which we’ve included the ‘my_functions.php’ file. When you run the above script, you will see the error message something like this: “Fatal error: Cannot redeclare multiplySelf ()”.