What is the difference between including and requiring a PHP file in an HTML document?

Including a PHP file in an HTML document means that the content of the PHP file will be inserted into the HTML document when it is processed by the server. This allows for code reuse and organization. Requiring a PHP file, on the other hand, means that the PHP code in the file must be executed before the rest of the script continues. This is useful for including essential functionality or configurations. 

// Including a PHP file in an HTML document
<?php include 'file.php'; ?>

// Requiring a PHP file before continuing with the script
<?php require 'file.php'; ?>

Keywords

include require PHP file HTML document difference

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