Exciting News! Flipper Code is now WePlugins! Same commitment to excellence, brand new identity.

How to use number_format_i18n filter in WordPress

Sandeep Kumar Mishra
Sandeep Kumar Mishra
July 12, 2022
5 minutes read
Share Via:

number_format_i18n filter

Filters the number formatted based on the locale.

To use number_format_i18n 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 Flipper Code, 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 modify_number_format_i18n_defaults which takes 3 parameters and we registered using add_filter. The first parameter number_format_i18n is name of the hook, The second parameter modify_number_format_i18n_defaults is name of the function which need to be called, third parameter is the priority of calling the hook if same hook is used multiple times and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometime, you have to remove a registered hook so you can use remove_filter to remove number_format_i18n filter.


    Below are the 3 parameters are required to use this hook.

  • $formatted : (string) Converted number in string format.
  • $number : (float) The number to convert based on locale.
  • $decimals : (int) Precision of the number of decimal places.

Live Example

apply_filters( 'number_format_i18n', string $formatted, float $number, int $decimals )

Below is an example how you can use this hook.

                        function modify_number_format_i18n_defaults($formatted, $number, $decimals) { 
                            // Update the $formatted variable according to your website requirements and return this variable. You can modify the $formatted variable conditionally too if you want.

                            return $formatted; 
                        // add the filter
                        add_filter( "number_format_i18n", "modify_number_format_i18n_defaults", 10, 3 );

To remove a hook callback, use the example below.

remove_filter( "number_format_i18n", "modify_number_format_i18n_defaults", 10, 3 );

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

Flipper Code is a Premium WordPress Plugins development company and integrating new functionalites into WordPress sites in form of custom WordPress Plugins since 2012. If you’re having any trouble using this hook, please contact our WordPress Development Team and we’d be happy to assist you.

Explore the latest in WordPress

Trying to stay on top of it all? Get the best tools, resources and inspiration sent to your inbox every Wednesday.