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What is the difference between “include” and “require” in PHP?

Question

What is the difference between “include” and “require” in PHP?

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Solution

In PHP, both "include" and "require" are used to include the content of one PHP file into another PHP file, but they work slightly differently.

  1. "include": When a file is included using the "include" statement and PHP cannot find it, the script will continue to execute. This means that "include" will only produce a warning (E_WARNING) and the PHP script will continue to execute.

  2. "require": On the other hand, when a file is included using the "require" statement and PHP cannot find it, the script will stop executing. This means that "require" will produce a fatal error (E_COMPILE_ERROR) and stop the script.

So, the main difference between "include" and "require" in PHP is how they handle failure. If the file is not essential, you might want to use "include". If the file is essential for the script to run, you should use "require".

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