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filter is not described

woocommerce_email_subject_(id) filter-hook . WC 1.0

Get email subject.

Usage

add_filter( 'woocommerce_email_subject_(id)', 'filter_function_name_872', 10, 3 );
function filter_function_name_872( $format_string, $object, $that ){
	// filter...

	return $format_string;
}
$format_string
-
$object
-
$that
-

Where the hook is called

WC_Email::get_subject()
woocommerce_email_subject_(id)
woocommerce/includes/emails/class-wc-email.php 380
return apply_filters( 'woocommerce_email_subject_' . $this->id, $this->format_string( $this->get_option( 'subject', $this->get_default_subject() ) ), $this->object, $this );

Where the hook is used (in WC core)

Usage not found!