*
* It is possible to replace this class with your own
* by setting the $wpdb global variable in wp-content/db.php
- * file with your class. You can name it wpdb also, since
- * this file will not be included, if the other file is
- * available.
+ * file to your class. The wpdb class will still be included,
+ * so you can extend it or simply use your own.
*
* @link http://codex.wordpress.org/Function_Reference/wpdb_Class
*
/**
* The last error during query.
*
- * @see get_last_error()
* @since 2.5.0
- * @access private
* @var string
*/
var $last_error = '';
var $func_call;
/**
- * Connects to the database server and selects a database
- *
- * PHP4 compatibility layer for calling the PHP5 constructor.
+ * Whether MySQL is used as the database engine.
*
- * @uses wpdb::__construct() Passes parameters and returns result
- * @since 0.71
+ * Set in WPDB::db_connect() to true, by default. This is used when checking
+ * against the required MySQL version for WordPress. Normally, a replacement
+ * database drop-in (db.php) will skip these checks, but setting this to true
+ * will force the checks to occur.
*
- * @param string $dbuser MySQL database user
- * @param string $dbpassword MySQL database password
- * @param string $dbname MySQL database name
- * @param string $dbhost MySQL database host
+ * @since 3.3.0
+ * @access public
+ * @var bool
*/
- function wpdb( $dbuser, $dbpassword, $dbname, $dbhost ) {
- return $this->__construct( $dbuser, $dbpassword, $dbname, $dbhost );
- }
+ public $is_mysql = null;
/**
* Connects to the database server and selects a database
* @since 2.5.0
*
* @param string $prefix Alphanumeric name for the new prefix.
+ * @param bool $set_table_names Optional. Whether the table names, e.g. wpdb::$posts, should be updated or not.
* @return string|WP_Error Old prefix or WP_Error on error
*/
function set_prefix( $prefix, $set_table_names = true ) {
* Returns an array of WordPress tables.
*
* Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to
- * override the WordPress users and usersmeta tables that would otherwise
+ * override the WordPress users and usermeta tables that would otherwise
* be determined by the prefix.
*
* The scope argument can take one of the following:
* @param resource $dbh Optional link identifier.
* @return null Always null.
*/
- function select( $db, $dbh = null) {
+ function select( $db, $dbh = null ) {
if ( is_null($dbh) )
$dbh = $this->dbh;
* Prepares a SQL query for safe execution. Uses sprintf()-like syntax.
*
* The following directives can be used in the query format string:
- * %d (decimal number)
+ * %d (integer)
+ * %f (float)
* %s (string)
* %% (literal percentage sign - no argument needed)
*
- * Both %d and %s are to be left unquoted in the query string and they need an argument passed for them.
+ * All of %d, %f, and %s are to be left unquoted in the query string and they need an argument passed for them.
* Literals (%) as parts of the query must be properly written as %%.
*
- * This function only supports a small subset of the sprintf syntax; it only supports %d (decimal number), %s (string).
+ * This function only supports a small subset of the sprintf syntax; it only supports %d (integer), %f (float), and %s (string).
* Does not support sign, padding, alignment, width or precision specifiers.
* Does not support argument numbering/swapping.
*
* @since 3.0.0
*/
function db_connect() {
- global $db_list, $global_db_list;
+
+ $this->is_mysql = true;
if ( WP_DEBUG ) {
$this->dbh = mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true );
return false;
}
- if ( preg_match( "/^\\s*(insert|delete|update|replace|alter) /i", $query ) ) {
+ if ( preg_match( '/^\s*(create|alter|truncate|drop) /i', $query ) ) {
+ $return_val = $this->result;
+ } elseif ( preg_match( '/^\s*(insert|delete|update|replace) /i', $query ) ) {
$this->rows_affected = mysql_affected_rows( $this->dbh );
// Take note of the insert_id
- if ( preg_match( "/^\\s*(insert|replace) /i", $query ) ) {
+ if ( preg_match( '/^\s*(insert|replace) /i', $query ) ) {
$this->insert_id = mysql_insert_id($this->dbh);
}
// Return number of rows affected
* @param string $table table name
* @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
* @return int|false The number of rows inserted, or false on error.
*/
function insert( $table, $data, $format = null ) {
* @param string $table table name
* @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
* @return int|false The number of rows affected, or false on error.
*/
function replace( $table, $data, $format = null ) {
* @param string $table table name
* @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * @param string $type Optional. What type of operation is this? INSERT or REPLACE. Defaults to INSERT.
* @return int|false The number of rows affected, or false on error.
*/
function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) {
* @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
* @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
- * @param array|string $format_where Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $where will be treated as strings.
+ * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+ * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings.
* @return int|false The number of rows updated, or false on error.
*/
function update( $table, $data, $where, $format = null, $where_format = null ) {
* @param string $output Optional. one of ARRAY_A | ARRAY_N | OBJECT constants. Return an associative array (column => value, ...),
* a numerically indexed array (0 => value, ...) or an object ( ->column = value ), respectively.
* @param int $y Optional. Row to return. Indexed from 0.
- * @return mixed Database query result in format specifed by $output or null on failure
+ * @return mixed Database query result in format specified by $output or null on failure
*/
function get_row( $query = null, $output = OBJECT, $y = 0 ) {
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
// Return an array of row objects with keys from column 1
// (Duplicates are discarded)
foreach ( $this->last_result as $row ) {
- $key = array_shift( $var_by_ref = get_object_vars( $row ) );
+ $var_by_ref = get_object_vars( $row );
+ $key = array_shift( $var_by_ref );
if ( ! isset( $new_array[ $key ] ) )
$new_array[ $key ] = $row;
}