/** * Send XML response back to Ajax request. * * @package WordPress * @since 2.1.0 */ class WP_Ajax_Response { /** * Store XML responses to send. * * @since 2.1.0 * @var array */ public $responses = array(); /** * Constructor - Passes args to WP_Ajax_Response::add(). * * @since 2.1.0 * * @see WP_Ajax_Response::add() * * @param string|array $args Optional. Will be passed to add() method. */ public function __construct( $args = '' ) { if ( ! empty( $args ) ) { $this->add( $args ); } } /** * Appends data to an XML response based on given arguments. * * With `$args` defaults, extra data output would be: * * * <$what id='$id' position='$position'> * * * * * @since 2.1.0 * * @param string|array $args { * Optional. An array or string of XML response arguments. * * @type string $what XML-RPC response type. Used as a child element of ``. * Default 'object' (``). * @type string|false $action Value to use for the `action` attribute in ``. Will be * appended with `_$id` on output. If false, `$action` will default to * the value of `$_POST['action']`. Default false. * @type int|WP_Error $id The response ID, used as the response type `id` attribute. Also * accepts a `WP_Error` object if the ID does not exist. Default 0. * @type int|false $old_id The previous response ID. Used as the value for the response type * `old_id` attribute. False hides the attribute. Default false. * @type string $position Value of the response type `position` attribute. Accepts 1 (bottom), * -1 (top), HTML ID (after), or -HTML ID (before). Default 1 (bottom). * @type string|WP_Error $data The response content/message. Also accepts a WP_Error object if the * ID does not exist. Default empty. * @type array $supplemental An array of extra strings that will be output within a `` * element as CDATA. Default empty array. * } * @return string XML response. */ public function add( $args = '' ) { $defaults = array( 'what' => 'object', 'action' => false, 'id' => '0', 'old_id' => false, 'position' => 1, 'data' => '', 'supplemental' => array(), ); $parsed_args = wp_parse_args( $args, $defaults ); $position = preg_replace( '/[^a-z0-9:_-]/i', '', $parsed_args['position'] ); $id = $parsed_args['id']; $what = $parsed_args['what']; $action = $parsed_args['action']; $old_id = $parsed_args['old_id']; $data = $parsed_args['data']; if ( is_wp_error( $id ) ) { $data = $id; $id = 0; } $response = ''; if ( is_wp_error( $data ) ) { foreach ( (array) $data->get_error_codes() as $code ) { $response .= "get_error_message( $code ) . ']]>'; $error_data = $data->get_error_data( $code ); if ( ! $error_data ) { continue; } $class = ''; if ( is_object( $error_data ) ) { $class = ' class="' . get_class( $error_data ) . '"'; $error_data = get_object_vars( $error_data ); } $response .= ""; if ( is_scalar( $error_data ) ) { $response .= ""; } elseif ( is_array( $error_data ) ) { foreach ( $error_data as $k => $v ) { $response .= "<$k>"; } } $response .= ''; } } else { $response = ""; } $s = ''; if ( is_array( $parsed_args['supplemental'] ) ) { foreach ( $parsed_args['supplemental'] as $k => $v ) { $s .= "<$k>"; } $s = "$s"; } if ( false === $action ) { $action = $_POST['action']; } $x = ''; $x .= ""; // The action attribute in the xml output is formatted like a nonce action. $x .= "<$what id='$id' " . ( false === $old_id ? '' : "old_id='$old_id' " ) . "position='$position'>"; $x .= $response; $x .= $s; $x .= ""; $x .= ''; $this->responses[] = $x; return $x; } /** * Display XML formatted responses. * * Sets the content type header to text/xml. * * @since 2.1.0 */ public function send() { header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ) ); echo ""; foreach ( (array) $this->responses as $response ) { echo $response; } echo ''; if ( wp_doing_ajax() ) { wp_die(); } else { die(); } } }
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