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See #49572, #50744 Built from https://develop.svn.wordpress.org/trunk@48586 git-svn-id: http://core.svn.wordpress.org/trunk@48348 1a063a9b-81f0-0310-95a4-ce76da25c4cd
227 lines
4.8 KiB
PHP
227 lines
4.8 KiB
PHP
<?php
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/**
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* WordPress Error API.
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*
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* Contains the WP_Error class and the is_wp_error() function.
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*
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* @package WordPress
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*/
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/**
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* WordPress Error class.
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*
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* Container for checking for WordPress errors and error messages. Return
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* WP_Error and use is_wp_error() to check if this class is returned. Many
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* core WordPress functions pass this class in the event of an error and
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* if not handled properly will result in code errors.
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*
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* @since 2.1.0
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*/
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class WP_Error {
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/**
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* Stores the list of errors.
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*
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* @since 2.1.0
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* @var array
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*/
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public $errors = array();
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/**
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* Stores the list of data for error codes.
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*
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* @since 2.1.0
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* @var array
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*/
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public $error_data = array();
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/**
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* Initialize the error.
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*
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* If `$code` is empty, the other parameters will be ignored.
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* When `$code` is not empty, `$message` will be used even if
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* it is empty. The `$data` parameter will be used only if it
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* is not empty.
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*
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* Though the class is constructed with a single error code and
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* message, multiple codes can be added using the `add()` method.
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*
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* @since 2.1.0
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*
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* @param string|int $code Error code.
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* @param string $message Error message.
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* @param mixed $data Optional. Error data.
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*/
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public function __construct( $code = '', $message = '', $data = '' ) {
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if ( empty( $code ) ) {
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return;
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}
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$this->errors[ $code ][] = $message;
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if ( ! empty( $data ) ) {
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$this->error_data[ $code ] = $data;
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}
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}
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/**
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* Retrieve all error codes.
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*
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* @since 2.1.0
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*
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* @return array List of error codes, if available.
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*/
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public function get_error_codes() {
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if ( ! $this->has_errors() ) {
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return array();
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}
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return array_keys( $this->errors );
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}
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/**
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* Retrieve first error code available.
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*
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* @since 2.1.0
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*
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* @return string|int Empty string, if no error codes.
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*/
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public function get_error_code() {
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$codes = $this->get_error_codes();
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if ( empty( $codes ) ) {
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return '';
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}
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return $codes[0];
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}
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/**
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* Retrieve all error messages or error messages matching code.
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*
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* @since 2.1.0
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*
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* @param string|int $code Optional. Retrieve messages matching code, if exists.
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* @return array Error strings on success, or empty array on failure (if using code parameter).
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*/
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public function get_error_messages( $code = '' ) {
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// Return all messages if no code specified.
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if ( empty( $code ) ) {
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$all_messages = array();
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foreach ( (array) $this->errors as $code => $messages ) {
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$all_messages = array_merge( $all_messages, $messages );
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}
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return $all_messages;
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}
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if ( isset( $this->errors[ $code ] ) ) {
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return $this->errors[ $code ];
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} else {
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return array();
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}
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}
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/**
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* Get single error message.
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*
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* This will get the first message available for the code. If no code is
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* given then the first code available will be used.
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*
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* @since 2.1.0
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*
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* @param string|int $code Optional. Error code to retrieve message.
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* @return string
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*/
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public function get_error_message( $code = '' ) {
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if ( empty( $code ) ) {
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$code = $this->get_error_code();
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}
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$messages = $this->get_error_messages( $code );
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if ( empty( $messages ) ) {
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return '';
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}
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return $messages[0];
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}
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/**
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* Retrieve error data for error code.
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*
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* @since 2.1.0
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*
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* @param string|int $code Optional. Error code.
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* @return mixed Error data, if it exists.
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*/
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public function get_error_data( $code = '' ) {
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if ( empty( $code ) ) {
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$code = $this->get_error_code();
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}
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if ( isset( $this->error_data[ $code ] ) ) {
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return $this->error_data[ $code ];
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}
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}
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/**
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* Verify if the instance contains errors.
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*
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* @since 5.1.0
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*
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* @return bool
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*/
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public function has_errors() {
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if ( ! empty( $this->errors ) ) {
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return true;
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}
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return false;
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}
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/**
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* Add an error or append additional message to an existing error.
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*
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* @since 2.1.0
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*
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* @param string|int $code Error code.
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* @param string $message Error message.
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* @param mixed $data Optional. Error data.
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*/
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public function add( $code, $message, $data = '' ) {
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$this->errors[ $code ][] = $message;
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if ( ! empty( $data ) ) {
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$this->error_data[ $code ] = $data;
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}
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}
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/**
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* Add data for error code.
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*
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* The error code can only contain one error data.
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*
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* @since 2.1.0
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*
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* @param mixed $data Error data.
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* @param string|int $code Error code.
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*/
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public function add_data( $data, $code = '' ) {
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if ( empty( $code ) ) {
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$code = $this->get_error_code();
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}
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$this->error_data[ $code ] = $data;
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}
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/**
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* Removes the specified error.
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*
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* This function removes all error messages associated with the specified
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* error code, along with any error data for that code.
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*
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* @since 4.1.0
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*
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* @param string|int $code Error code.
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*/
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public function remove( $code ) {
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unset( $this->errors[ $code ] );
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unset( $this->error_data[ $code ] );
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}
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}
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