How do I make sure an include file exists before loading the page?

If it is essential that something you wish to include is there before you load a page, then don't use include, use require instead.

For instance if it is not just a stylesheet you are including but a file containing data that the page won't make sense without.


<?php

require("musthavethis.php");

//fatal error if not present

include("takeitorleaveit.html");

//if not present just an error message, script continues to run

?>

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How do I make sure an include file exists before loading the page?

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