When should you use require() instead of include() in PHP?

You should use require() instead of include() in PHP when you want to include a file that is essential for your script to run. If the file cannot be included, require() will produce a fatal error and stop the script execution, while include() will only produce a warning and continue execution. This ensures that the necessary file is loaded and the script does not continue if it is not available. 

<?php
require('essential_file.php');

// Rest of your PHP code
?>

Keywords

require include PHP file inclusion error handling

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