wp_send_json_error( mixed $data = null, int $status_code = null )

向Ajax请求发送JSON响应，指示失败。
Send a JSON response back to an Ajax request, indicating failure.

目录锚点：#说明#参数#源码#笔记

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说明（Description）

如果$data参数是WP_Error对象，则对象中的错误将被处理并作为错误代码和相应消息的数组输出。所有其他类型的输出无需进一步处理。

参数（Parameters）

源码（Source）

/**
 * Send a JSON response back to an Ajax request, indicating failure.
 *
 * If the `$data` parameter is a {@see WP_Error} object, the errors
 * within the object are processed and output as an array of error
 * codes and corresponding messages. All other types are output
 * without further processing.
 *
 * @since 3.5.0
 * @since 4.1.0 The `$data` parameter is now processed if a {@see WP_Error}
 *              object is passed in.
 *
 * @param mixed $data Data to encode as JSON, then print and die.
 */
function wp_send_json_error( $data = null ) {
	$response = array( 'success' => false );

	if ( isset( $data ) ) {
		if ( is_wp_error( $data ) ) {
			$result = array();
			foreach ( $data->errors as $code => $messages ) {
				foreach ( $messages as $message ) {
					$result[] = array( 'code' => $code, 'message' => $message );
				}
			}

			$response['data'] = $result;
		} else {
			$response['data'] = $data;
		}
	}

	wp_send_json( $response );
}

笔记（Notes）

Example