Sal Ferrarello
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PHP require vs include

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The behaviors of require, include, require_once, and include_once in PHP are all very similar with some slight differences. Here is the table highlighting the different behaviors of these statements.

PHP statement File Does Not Exist File Already Loaded
require Fatal Error loads again
include Warning loads again
require_once Fatal Error skips it
include_once Warning skips it
Sal Ferrarello
Sal Ferrarello (@salcode)
Sal is a PHP and JavaScript developer with a focus on the WordPress platform. He is a conference speaker with a background including Piano Player, Radio DJ, Magician/Juggler, Beach Photographer, and High School Math Teacher. Sal can be found professionally at WebDevStudios, where he works as a principal engineer.

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