PHP Include

The PHP include statement is used to include a PHP file into another PHP file. It can be used to include header, footer or navigation files on each page of a website.

Syntax

The syntax for the PHP include statement is as follows:

include 'filename.php';

Example:

<?php
    // including a file named header.php
    include 'header.php';

    // rest of the code
?>

Output

The output of the PHP include statement is the content of the included file, which is added to the output of the file that includes it.

Explanation

The PHP include statement is used to include a file into another file at the point where the statement appears. It takes the contents of the included file and adds it to the output of the file that includes it.

Use

The PHP include statement can be used to include common content, such as header, footer, or navigation files, in multiple pages of a website. This makes it easy to maintain and update the common content in a single file, instead of having to modify every file that includes it.

Important Points

• The include statement is case-insensitive in Windows, but case-sensitive in Unix/Linux.
• If the file specified in the include statement does not exist, a warning will be generated, but the script will continue to run.
• The include statement can also be used with URLs, but this is generally not recommended due to security concerns.

Summary

The PHP include statement is a useful tool for including common content in multiple pages of a website. It is easy to use and can save time and effort when maintaining a website.