When is it more appropriate to use require() over include() in PHP scripts?

When you want to include a file in your PHP script that is essential for the script to run correctly, it is more appropriate to use require() instead of include(). require() will cause a fatal error if the file cannot be included, halting the script execution, while include() will only generate a warning and continue execution. 

<?php
require('essential_file.php');
// Rest of the script
?>

Keywords

require include PHP scripts file inclusion error handling

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