Use of external file for list of mime types

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I’m about to implement the filter/function below to be able to get control of the file types a user can upload to the WordPress application I’m working on. However, the list of mime types is very long and I don’t want to put it directly into functions.php but instead loop through an external file that holds the different mime types.

How can this be done?

<?php
     add_filter('upload_mimes', 'custom_upload_mimes');

     function custom_upload_mimes ( $existing_mimes = array() ) {

         $existing_mimes['ppt'] = 'application/vnd.ms-powerpoint';
         ...+ ~50 more...

         return $existing_mimes;
     }
?>
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1 comment

  1. functions.php is not the place to put this, you should build a plugin.

    Check the Codex: Writing a Plugin.

    Basically:

    <?php
/*
Plugin Name: Site Mime Types
*/

add_filter('upload_mimes', 'custom_upload_mimes');        

function custom_upload_mimes ( $existing_mimes = array() ) {

     $existing_mimes['ppt'] = 'application/vnd.ms-powerpoint';
     ...+ ~50 more...

     return $existing_mimes;
 }

    See this WordPress Answer: Where to put my code: plugin or functions.php?

    If you really want to read an external file for this, check this search query.