WC_Tax::maybe_remove_tax_class_rates │ public static │ WC 1.0

Deprecated since 3.7.0. It is no longer supported and may be removed in future releases. It is recommended to replace this function with the same one.

When the woocommerce_tax_classes option is changed, remove any orphan rates.

Method of the class: WC_Tax{}

No Hooks.

Returns

null. Nothing (null).

Usage

$result = WC_Tax::maybe_remove_tax_class_rates( $old_value, $value );
$old_value(string) (required)
Old rates value.
$value(string) (required)
New rates value.

Changelog

Deprecated since 3.7.0

WC_Tax::maybe_remove_tax_class_rates() code WC 10.3.6

woocommerce/includes/class-wc-tax.php 
public static function maybe_remove_tax_class_rates( $old_value, $value ) {
	wc_deprecated_function( 'WC_Tax::maybe_remove_tax_class_rates', '3.7', 'WC_Tax::delete_tax_class_by' );

	$tax_classes          = array_filter( array_map( 'trim', explode( "\n", $value ) ) );
	$existing_tax_classes = self::get_tax_classes();
	$removed              = array_diff( $existing_tax_classes, $tax_classes );
	foreach ( $removed as $name ) {
		self::delete_tax_class_by( 'name', $name );
	}
}