Check if float values are equal in PHP

/**
 * wpcodebook_is_float_equal.
 *
 * @see https://wpcodebook.com/snippets/check-if-float-values-are-equal-in-php/
 */
function wpcodebook_is_float_equal( $float1, $float2 ) {
    $epsilon = ( defined( 'PHP_FLOAT_EPSILON' ) ? PHP_FLOAT_EPSILON : 0.000001 );
    return ( abs( $float1 - $float2 ) < $epsilon );
}