woocommerce_email_subject_backorder │ filter-hook │ WC 3.0.0

Filter the subject of the backorder notification email.

Usage

add_filter( 'woocommerce_email_subject_backorder', 'wp_kama_woocommerce_email_subject_backorder_filter', 10, 3 );

/**
 * Function for `woocommerce_email_subject_backorder` filter-hook.
 * 
 * @param string $subject The email subject.
 * @param array  $args    Arguments.
 * @param null   $null    Unused.
 *
 * @return string
 */
function wp_kama_woocommerce_email_subject_backorder_filter( $subject, $args, $null ){

	// filter...
	return $subject;
}

$subject(string)

The email subject.

$args(array)

Arguments.

$null(null)

Unused.

Changelog

Where the hook is called

apply_filters( 'woocommerce_email_subject_backorder', $subject, $args, null ),

Where the hook is used in WooCommerce