What is the difference between require() and include() in PHP?

Gregorio · Jan 16, 2016

I start learning PHP but feeling difficult in using these functions. What is the difference between require() and include()?

When should I use require() and When should I use include()?

savidge4 · Jan 17, 2016

Technically speaking they are about one in the same. "includes" is a bit more forgiving in terms of error emitting. "require" will stop cold with an error, and "includes" will displace a warning and continue on its way.

projectpop · Jan 19, 2016

More specifically, require will produce fatal error and stop the script on error, script will not continue.
Include will only produce warning, and script will continue.

acquisto · Jan 19, 2016

Use include if you don't mind your script continuing without loading the file (in case it doesn't exist etc) and you can (although you shouldn't) live with a Warning error message being displayed.

Using require means your script will halt if it can't load the specified file, and throw a Fatal error.

EpicGlobalWeb · Feb 2, 2016

Yes there is quite a big difference. For require() Your script will not run until the required elements are included. With include, the remainder of your script will run if the included element fails to load for some reason. I typically use require for database work, security, or payment processing. Include still suits most purposes, however. And in many cases this is down to personal preference.

A programmatic analogy is like this:

In require, if required fails to load then die().

In include, if include fails to load then continue.

richasharma · Feb 3, 2016

Both are used for performing same work i.e. loading any php file into another php file
but in require if an error occurs then it will stop scripting their.
In include it will show the warning and script the next code.

JohnnyK · Apr 7, 2017

Require will throw a PHP Fatal Error if the file cannot be loaded. (Execution stops)
Include produces a Warning if the file cannot be loaded. (Execution continues)

What is the difference between require() and include() in PHP?

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