How to use print_late_styles filter in WordPress

print_late_styles filter

Filters whether to print the styles queued too late for the HTML head.

To use the print_late_styles filter, first you have to register it using add_filter. You can write this code into functions.php of your activated theme or in a custom WordPress Plugin.

We at WePlugins always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.

In the below live example, we have defined a function weplugins_modify_print_late_styles_defaults which takes 1 parameter and we registered it using add_filter. The first parameter print_late_styles is the name of the hook, the second parameter weplugins_modify_print_late_styles_defaults is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times, and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometimes, you have to remove a registered hook so you can use remove_filter to remove the print_late_styles filter.

Parameters

Below the 1 parameter is required to use this hook.

• $print : (bool) Whether to print the ‘late’ styles. Default true.

Example 1: Basic Usage

Below is an example of how you can use this hook.

    function weplugins_modify_print_late_styles_defaults($print) { 
        // Update the $print variable according to your website requirements and return this variable. You can modify the $print variable conditionally too if you want.
        return $print; 
    }
    // add the filter
    add_filter( "print_late_styles", "weplugins_modify_print_late_styles_defaults", 10, 1 );

Example 2: Removing a Hook

To remove a hook callback, use the example below.

remove_filter( "print_late_styles", "weplugins_modify_print_late_styles_defaults", 10, 1 );

Please make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.

Example 3: Conditional Logic

Here is a more advanced example with conditional logic to decide when to print the styles:

    function weplugins_conditional_print_late_styles($print) {
        // Let's say you only want to print late styles on specific pages
        if (is_page('contact')) {
            $print = true;
        } else {
            $print = false;
        }
        return $print;
    }
    add_filter("print_late_styles", "weplugins_conditional_print_late_styles", 10, 1);