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phpdoc updates from jacobsantos. see #7038

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git-svn-id: https://develop.svn.wordpress.org/trunk@8164 602fd350-edb4-49c9-b593-d223f7449a82
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Ryan Boren
2008-06-22 20:23:23 +00:00
parent 97d67b7f80
commit ef20031e40
4 changed files with 944 additions and 452 deletions
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wp-includes/wp-db.php
+450 -65
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@@ -1,57 +1,308 @@
<?php
// WordPress DB Class
// ORIGINAL CODE FROM:
// Justin Vincent (justin@visunet.ie)
// http://php.justinvincent.com
/**
* WordPress DB Class
*
* Original code from {@link http://php.justinvincent.com Justin Vincent (justin@visunet.ie)}
*
* @package WordPress
* @subpackage Database
* @since 0.71
*/
/**
* @since 0.71
*/
define('EZSQL_VERSION', 'WP1.25');
/**
* @since 0.71
*/
define('OBJECT', 'OBJECT', true);
/**
* @since {@internal Version Unknown}}
*/
define('OBJECT_K', 'OBJECT_K', false);
/**
* @since 0.71
*/
define('ARRAY_A', 'ARRAY_A', false);
/**
* @since 0.71
*/
define('ARRAY_N', 'ARRAY_N', false);
/**
* WordPress Database Access Abstraction Object
*
* It is possible to replace this class with your own
* by setting the $wpdb global variable in wp-content/wpdb.php
* file with your class. You can name it wpdb also, since
* this file will not be included, if the other file is
* available.
*
* @link http://codex.wordpress.org/Function_Reference/wpdb_Class
*
* @package WordPress
* @subpackage Database
* @since 0.71
* @final
*/
class wpdb {
/**
* Whether to show SQL/DB errors
*
* @since 0.71
* @access private
* @var bool
*/
var $show_errors = false;
/**
* Whether to suppress errors during the DB bootstrapping.
*
* @access private
* @since {@internal Version Unknown}}
* @var bool
*/
var $suppress_errors = false;
/**
* The last error during query.
*
* @since {@internal Version Unknown}}
* @var string
*/
var $last_error = '';
/**
* Amount of queries made
*
* @since 1.2.0
* @access private
* @var int
*/
var $num_queries = 0;
/**
* Saved result of the last query made
*
* @since 1.2.0
* @access private
* @var array
*/
var $last_query;
/**
* Saved info on the table column
*
* @since 1.2.0
* @access private
* @var array
*/
var $col_info;
/**
* Saved queries that were executed
*
* @since 1.5.0
* @access private
* @var array
*/
var $queries;
/**
* WordPress table prefix
*
* You can set this to have multiple WordPress installations
* in a single database. The second reason is for possible
* security precautions.
*
* @since 0.71
* @access private
* @var string
*/
var $prefix = '';
/**
* Whether the database queries are ready to start executing.
*
* @since 2.5.0
* @access private
* @var bool
*/
var $ready = false;
// Our tables
/**
* WordPress Posts table
*
* @since 1.5.0
* @access public
* @var string
*/
var $posts;
/**
* WordPress Users table
*
* @since 1.5.0
* @access public
* @var string
*/
var $users;
/**
* WordPress Categories table
*
* @since 1.5.0
* @access public
* @var string
*/
var $categories;
/**
* WordPress Post to Category table
*
* @since 1.5.0
* @access public
* @var string
*/
var $post2cat;
/**
* WordPress Comments table
*
* @since 1.5.0
* @access public
* @var string
*/
var $comments;
/**
* WordPress Links table
*
* @since 1.5.0
* @access public
* @var string
*/
var $links;
/**
* WordPress Options table
*
* @since 1.5.0
* @access public
* @var string
*/
var $options;
/**
* WordPress Post Metadata table
*
* @since {@internal Version Unknown}}
* @access public
* @var string
*/
var $postmeta;
/**
* WordPress User Metadata table
*
* @since 2.3.0
* @access public
* @var string
*/
var $usermeta;
/**
* WordPress Terms table
*
* @since 2.3.0
* @access public
* @var string
*/
var $terms;
/**
* WordPress Term Taxonomy table
*
* @since 2.3.0
* @access public
* @var string
*/
var $term_taxonomy;
/**
* WordPress Term Relationships table
*
* @since 2.3.0
* @access public
* @var string
*/
var $term_relationships;
/**
* List of WordPress tables
*
* @since {@internal Version Unknown}}
* @access private
* @var array
*/
var $tables = array('users', 'usermeta', 'posts', 'categories', 'post2cat', 'comments', 'links', 'link2cat', 'options',
'postmeta', 'terms', 'term_taxonomy', 'term_relationships');
/**
* Database table columns charset
*
* @since 2.2.0
* @access public
* @var string
*/
var $charset;
/**
* Database table columns collate
*
* @since 2.2.0
* @access public
* @var string
*/
var $collate;
/**
* Connects to the database server and selects a database
* @param string $dbuser
* @param string $dbpassword
* @param string $dbname
* @param string $dbhost
*
* PHP4 compatibility layer for calling the PHP5 constructor.
*
* @uses wpdb::__construct() Passes parameters and returns result
* @since 0.71
*
* @param string $dbuser MySQL database user
* @param string $dbpassword MySQL database password
* @param string $dbname MySQL database name
* @param string $dbhost MySQL database host
*/
function wpdb($dbuser, $dbpassword, $dbname, $dbhost) {
return $this->__construct($dbuser, $dbpassword, $dbname, $dbhost);
}
/**
* Connects to the database server and selects a database
*
* PHP5 style constructor for compatibility with PHP5. Does
* the actual setting up of the class properties and connection
* to the database.
*
* @since 2.0.8
*
* @param string $dbuser MySQL database user
* @param string $dbpassword MySQL database password
* @param string $dbname MySQL database name
* @param string $dbhost MySQL database host
*/
function __construct($dbuser, $dbpassword, $dbname, $dbhost) {
register_shutdown_function(array(&$this, "__destruct"));
@@ -97,10 +348,28 @@ class wpdb {
$this->select($dbname);
}
/**
* PHP5 style destructor and will run when database object is destroyed.
*
* @since 2.0.8
*
* @return bool Always true
*/
function __destruct() {
return true;
}
/**
* Sets the table prefix for the WordPress tables.
*
* Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to
* override the WordPress users and usersmeta tables.
*
* @since 2.5.0
*
* @param string $prefix Alphanumeric name for the new prefix.
* @return string Old prefix
*/
function set_prefix($prefix) {
if ( preg_match('|[^a-z0-9_]|i', $prefix) )
@@ -122,8 +391,15 @@ class wpdb {
}
/**
* Selects a database using the current class's $this->dbh
* @param string $db name
* Selects a database using the current database connection.
*
* The database name will be changed based on the current database
* connection. On failure, the execution will bail and display an DB error.
*
* @since 0.71
*
* @param string $db MySQL database name
* @return null Always null.
*/
function select($db) {
if (!@mysql_select_db($db, $this->dbh)) {
@@ -144,6 +420,8 @@ class wpdb {
/**
* Escapes content for insertion into the database, for security
*
* @since 0.71
*
* @param string $string
* @return string query safe string
*/
@@ -160,6 +438,9 @@ class wpdb {
/**
* Escapes content by reference for insertion into the database, for security
*
* @since 2.3.0
*
* @param string $s
*/
function escape_by_ref(&$s) {
@@ -167,10 +448,17 @@ class wpdb {
}
/**
* Prepares a SQL query for safe use, using sprintf() syntax
* Prepares a SQL query for safe use, using sprintf() syntax.
*
* @link http://php.net/sprintf See for syntax to use for query string.
* @since 2.3.0
*
* @param null|string $args If string, first parameter must be query statement
* @param mixed $args,... If additional parameters, they will be set inserted into the query.
* @return null|string Sanitized query string
*/
function prepare($args=NULL) {
if ( NULL === $args )
function prepare($args=null) {
if ( is_null( $args ) )
return;
$args = func_get_args();
$query = array_shift($args);
@@ -181,15 +469,20 @@ class wpdb {
return @vsprintf($query, $args);
}
// ==================================================================
// Print SQL/DB error.
/**
* Print SQL/DB error.
*
* @since 0.71
* @global array $EZSQL_ERROR Stores error information of query and error string
*
* @param string $str The error to display
* @return bool False if the showing of errors is disabled.
*/
function print_error($str = '') {
global $EZSQL_ERROR;
if (!$str) $str = mysql_error($this->dbh);
$EZSQL_ERROR[] =
array ('query' => $this->last_query, 'error_str' => $str);
$EZSQL_ERROR[] = array ('query' => $this->last_query, 'error_str' => $str);
if ( $this->suppress_errors )
return false;
@@ -223,39 +516,71 @@ class wpdb {
</div>";
}
// ==================================================================
// Turn error handling on or off..
/**
* Enables showing of database errors.
*
* This function should be used only to enable showing of errors.
* wpdb::hide_errors() should be used instead for hiding of errors. However,
* this function can be used to enable and disable showing of database
* errors.
*
* @since 0.71
*
* @param bool $show Whether to show or hide errors
* @return bool Old value for showing errors.
*/
function show_errors( $show = true ) {
$errors = $this->show_errors;
$this->show_errors = $show;
return $errors;
}
/**
* Disables showing of database errors.
*
* @since 0.71
*
* @return bool Whether showing of errors was active or not
*/
function hide_errors() {
$show = $this->show_errors;
$this->show_errors = false;
return $show;
}
/**
* Whether to suppress database errors.
*
* @param unknown_type $suppress
* @return unknown
*/
function suppress_errors( $suppress = true ) {
$errors = $this->suppress_errors;
$this->suppress_errors = $suppress;
return $errors;
}
// ==================================================================
// Kill cached query results
/**
* Kill cached query results.
*
* @since 0.71
*/
function flush() {
$this->last_result = array();
$this->col_info = null;
$this->last_query = null;
}
// ==================================================================
// Basic Query - see docs for more detail
/**
* Perform a MySQL database query, using current database connection.
*
* More information can be found on the codex page.
*
* @since 0.71
*
* @param string $query
* @return unknown
*/
function query($query) {
if ( ! $this->ready )
return false;
@@ -324,10 +649,13 @@ class wpdb {
}
/**
* Insert an array of data into a table
* Insert an array of data into a table.
*
* @since 2.5.0
*
* @param string $table WARNING: not sanitized!
* @param array $data should not already be SQL-escaped
* @return mixed results of $this->query()
* @param array $data Should not already be SQL-escaped
* @return mixed Results of $this->query()
*/
function insert($table, $data) {
$data = add_magic_quotes($data);
@@ -336,11 +664,14 @@ class wpdb {
}
/**
* Update a row in the table with an array of data
* Update a row in the table with an array of data.
*
* @since 2.5.0
*
* @param string $table WARNING: not sanitized!
* @param array $data should not already be SQL-escaped
* @param array $where a named array of WHERE column => value relationships. Multiple member pairs will be joined with ANDs. WARNING: the column names are not currently sanitized!
* @return mixed results of $this->query()
* @param array $data Should not already be SQL-escaped
* @param array $where A named array of WHERE column => value relationships. Multiple member pairs will be joined with ANDs. WARNING: the column names are not currently sanitized!
* @return mixed Results of $this->query()
*/
function update($table, $data, $where){
$data = add_magic_quotes($data);
@@ -357,11 +688,21 @@ class wpdb {
}
/**
* Get one variable from the database
* @param string $query (can be null as well, for caching, see codex)
* @param int $x = 0 row num to return
* @param int $y = 0 col num to return
* @return mixed results
* Retrieve one variable from the database.
*
* This combines the functionality of wpdb::get_row() and wpdb::get_col(),
* so both the column and row can be picked.
*
* It is possible to use this function without executing more queries. If
* you already made a query, you can set the $query to 'null' value and just
* retrieve either the column and row of the last query result.
*
* @since 0.71
*
* @param string $query Can be null as well, for caching
* @param int $x Column num to return
* @param int $y Row num to return
* @return mixed Database query results
*/
function get_var($query=null, $x = 0, $y = 0) {
$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
@@ -378,11 +719,14 @@ class wpdb {
}
/**
* Get one row from the database
* @param string $query
* Retrieve one row from the database.
*
* @since 0.71
*
* @param string $query SQL query
* @param string $output ARRAY_A | ARRAY_N | OBJECT
* @param int $y row num to return
* @return mixed results
* @param int $y Row num to return
* @return mixed Database query results
*/
function get_row($query = null, $output = OBJECT, $y = 0) {
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
@@ -406,10 +750,13 @@ class wpdb {
}
/**
* Gets one column from the database
* @param string $query (can be null as well, for caching, see codex)
* @param int $x col num to return
* @return array results
* Retrieve one column from the database.
*
* @since 0.71
*
* @param string $query Can be null as well, for caching
* @param int $x Col num to return. Starts from 0.
* @return array Column results
*/
function get_col($query = null , $x = 0) {
if ( $query )
@@ -424,10 +771,13 @@ class wpdb {
}
/**
* Return an entire result set from the database
* @param string $query (can also be null to pull from the cache)
* Retrieve an entire result set from the database.
*
* @since 0.71
*
* @param string|null $query Can also be null to pull from the cache
* @param string $output ARRAY_A | ARRAY_N | OBJECT_K | OBJECT
* @return mixed results
* @return mixed Database query results
*/
function get_results($query = null, $output = OBJECT) {
$this->func_call = "\$db->get_results(\"$query\", $output)";
@@ -469,10 +819,13 @@ class wpdb {
}
/**
* Grabs column metadata from the last query
* Retrieve column metadata from the last query.
*
* @since 0.71
*
* @param string $info_type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill
* @param int $col_offset 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type
* @return mixed results
* @return mixed Column Results
*/
function get_col_info($info_type = 'name', $col_offset = -1) {
if ( $this->col_info ) {
@@ -490,7 +843,11 @@ class wpdb {
}
/**
* Starts the timer, for debugging purposes
* Starts the timer, for debugging purposes.
*
* @since 1.5.0
*
* @return bool Always returns true
*/
function timer_start() {
$mtime = microtime();
@@ -500,8 +857,11 @@ class wpdb {
}
/**
* Stops the debugging timer
* @return int total time spent on the query, in milliseconds
* Stops the debugging timer.
*
* @since 1.5.0
*
* @return int Total time spent on the query, in milliseconds
*/
function timer_stop() {
$mtime = microtime();
@@ -513,9 +873,13 @@ class wpdb {
/**
* Wraps fatal errors in a nice header and footer and dies.
*
* @since 1.5.0
*
* @param string $message
* @return unknown
*/
function bail($message) { // Just wraps errors in a nice header and footer
function bail($message) {
if ( !$this->show_errors ) {
if ( class_exists('WP_Error') )
$this->error = new WP_Error('500', $message);
@@ -527,8 +891,12 @@ class wpdb {
}
/**
* Checks wether of not the database version is high enough to support the features WordPress uses
* @global $wp_version
* Whether or not MySQL database is minimal required version.
*
* @since 2.5.0
* @uses $wp_version
*
* @return WP_Error
*/
function check_database_version()
{
@@ -540,8 +908,13 @@ class wpdb {
}
/**
* This function is called when WordPress is generating the table schema to determine wether or not the current database
* supports or needs the collation statements.
* Whether of not the database version supports collation.
*
* Called when WordPress is generating the table scheme.
*
* @since 2.5.0
*
* @return bool True if collation is supported, false if version does not
*/
function supports_collation()
{
@@ -549,8 +922,14 @@ class wpdb {
}
/**
* Get the name of the function that called wpdb.
* @return string the name of the calling function
* Retrieve the name of the function that called wpdb.
*
* Requires PHP 4.3 and searches up the list of functions until it reaches
* the one that would most logically had called this method.
*
* @since 2.5.0
*
* @return string The name of the calling function
*/
function get_caller() {
// requires PHP 4.3+
@@ -578,6 +957,12 @@ class wpdb {
}
if ( ! isset($wpdb) )
if ( ! isset($wpdb) ) {
/**
* WordPress Database Object, if it isn't set already in wp-content/wpdb.php
* @global object $wpdb Creates a new wpdb object based on wp-config.php Constants for the database
* @since 0.71
*/
$wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
}
?>