How to use import_upload_size_limit filter in WordPress

import_upload_size_limit filter

So, you’re diving into WordPress development, eh? Let’s talk about the import_upload_size_limit filter. It’s one of those handy hooks you’ll want to make friends with, especially when dealing with uploads. The cool thing about WordPress is the way it lets us tweak things using hooks, and this one is no exception. Whether you’re adding it to your theme’s functions.php or creating a custom plugin (which we totally recommend for keeping things smooth during updates), this filter is your go-to for managing upload limits.

Example 1: Modifying the Default Upload Size

Imagine you need to change the default upload size limit for your website. With this hook, you can easily do that. Here’s a quick way to modify the limit according to your needs:

    function weplugins_modify_import_upload_size_limit_defaults($max_upload_size) { 
        // Update the $max_upload_size variable according to your website requirements.
        return $max_upload_size; 
    }
    // add the filter
    add_filter("import_upload_size_limit", "weplugins_modify_import_upload_size_limit_defaults", 10, 1);
    

Example 2: Removing a Hook Callback

Sometimes, you might need to remove a previously registered hook. No worries! Here’s how you can remove the import_upload_size_limit filter:

    remove_filter("import_upload_size_limit", "weplugins_modify_import_upload_size_limit_defaults", 10, 1);
    

Just make sure you use the same callback function name, priority, and number of arguments when removing the hook.

Example 3: Conditional Modification of Upload Size

What if you want to change the upload size based on some condition? Easy! You can tweak the function to make conditional changes:

    function weplugins_modify_import_upload_size_limit_conditionally($max_upload_size) { 
        if (is_user_logged_in()) {
            $max_upload_size = 2 * 1024 * 1024; // 2 MB for logged-in users
        }
        return $max_upload_size;
    }
    add_filter("import_upload_size_limit", "weplugins_modify_import_upload_size_limit_conditionally", 10, 1);
    

Below is an example how you can use this hook.

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