wp_checkdate

Filters whether the given date is valid for the Gregorian calendar.

Description

apply_filters( 'wp_checkdate', (bool) $checkdate, (string) $source_date ); 

Parameters (2)

0. $checkdate (bool) => checkdate( $month, $day, $year )

Whether the given date is valid.

1. $source_date (string)

The source date.

Usage

To run the hook, copy the example below.

$checkdate = apply_filters( 'wp_checkdate', $checkdate, $source_date ); 
                         
if ( !empty( $checkdate ) ) { 
                         
   // everything has led up to this point... 
                         
} 
  

The following example is for adding a hook callback.

// define the wp_checkdate callback 
function filter_wp_checkdate( $checkdate, $source_date ) { 
    // make filter magic happen here... 
    return $checkdate; 
}; 
         
// add the filter 
add_filter( 'wp_checkdate', 'filter_wp_checkdate', 10, 2 ); 

To remove a hook callback, use the example below.

// remove the filter 
remove_filter( 'wp_checkdate', 'filter_wp_checkdate', 10, 2 );