Check For Leap Year

check-for-leap-year.php

<?php
/**
 * Simple function to check if it's currently a 'leap year'.
 *
 * @return bool      True if it is. False if not.
 */
function is_leap_year() {
    // Ensure that '0' isn't read as boolean.
    $zero = (int) 0;
    
    // Current Year
    $year = date( 'Y' );

    // No remainders means it's a leap year!
    return ( $year % 4 === $zero );
}