Constructs name attributes for use in form() fields

This function should be used in form() methods to create name attributes for fields to be saved by update()

$field_name string Required

Field name.

string Name attribute for $field_name.

File: wp-includes/class-wp-widget.php. View all references

public function get_field_name( $field_name ) {
	$pos = strpos( $field_name, '[' );

	if ( false !== $pos ) {
		// Replace the first occurrence of '[' with ']['.
		$field_name = '[' . substr_replace( $field_name, '][', $pos, strlen( '[' ) );
	} else {
		$field_name = '[' . $field_name . ']';
	}

	return 'widget-' . $this->id_base . '[' . $this->number . ']' . $field_name;
}