As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
<?php
/**
* Send XML response back to Ajax request.
*
* @package WordPress
* @since 2.1.0
*/
#[AllowDynamicProperties]
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:
*
* <response action='{$action}_$id'>
* <$what id='$id' position='$position'>
* <response_data><![CDATA[$data]]></response_data>
* </$what>
* </response>
*
* @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 `<response>`.
* Default 'object' (`<object>`).
* @type string|false $action Value to use for the `action` attribute in `<response>`. Will be
* appended with `_$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 `<supplemental>`
* 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 ) {
$response .= "<wp_error code='$code'><![CDATA[" . $data->get_error_message( $code ) . ']]></wp_error>';
$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 );
}
$response .= "<wp_error_data code='$code'$class>";
if ( is_scalar( $error_data ) ) {
$response .= "<![CDATA[$error_data]]>";
} elseif ( is_array( $error_data ) ) {
foreach ( $error_data as $k => $v ) {
$response .= "<$k><![CDATA[$v]]></$k>";
}
}
$response .= '</wp_error_data>';
}
} else {
$response = "<response_data><![CDATA[$data]]></response_data>";
}
$s = '';
if ( is_array( $parsed_args['supplemental'] ) ) {
foreach ( $parsed_args['supplemental'] as $k => $v ) {
$s .= "<$k><![CDATA[$v]]></$k>";
}
$s = "<supplemental>$s</supplemental>";
}
if ( false === $action ) {
$action = $_POST['action'];
}
$x = '';
$x .= "<response action='{$action}_$id'>"; // 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;
$x .= "</$what>";
$x .= '</response>';
$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 "<?xml version='1.0' encoding='" . get_option( 'blog_charset' ) . "' standalone='yes'?><wp_ajax>";
foreach ( (array) $this->responses as $response ) {
echo $response;
}
echo '</wp_ajax>';
if ( wp_doing_ajax() ) {
wp_die();
} else {
die();
}
}
}