<?php class WPCF7_SWV_RequiredFileRule extends WPCF7_SWV_Rule { const rule_name = 'requiredfile'; public function matches( $context ) { if ( false === parent::matches( $context ) ) { return false; } if ( empty( $context['file'] ) ) { return false; } return true; } public function validate( $context ) { $field = $this->get_property( 'field' ); $input = isset( $_FILES[$field]['tmp_name'] ) ? $_FILES[$field]['tmp_name'] : ''; $input = wpcf7_array_flatten( $input ); $input = wpcf7_exclude_blank( $input ); if ( empty( $input ) ) { return new WP_Error( 'wpcf7_invalid_requiredfile', $this->get_property( 'error' ) ); } return true; } public function to_array() { return array( 'rule' => self::rule_name ) + (array) $this->properties; } }