This either means that the username and password information in your wp-config.php file is incorrect or we can't contact the database server at %s. This could mean your host's database server is down.
If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.
-"/*/WP_I18N_DB_CONN_ERROR*/, $dbhost ), 'db_connect_fail' ); - return; - } - - $this->ready = true; - - if ( $this->has_cap( 'collation' ) && !empty( $this->charset ) ) { - if ( function_exists( 'mysql_set_charset' ) ) { - mysql_set_charset( $this->charset, $this->dbh ); - $this->real_escape = true; - } else { - $query = $this->prepare( 'SET NAMES %s', $this->charset ); - if ( ! empty( $this->collate ) ) - $query .= $this->prepare( ' COLLATE %s', $this->collate ); - $this->query( $query ); - } - } - - $this->select( $dbname, $this->dbh ); + $this->db_connect(); } /** @@ -560,6 +521,49 @@ class wpdb { return true; } + /** + * Set $this->charset and $this->collate + */ + function init_charset() { + if ( function_exists('is_multisite') && is_multisite() ) { + $this->charset = 'utf8'; + if ( defined( 'DB_COLLATE' ) && DB_COLLATE ) + $this->collate = DB_COLLATE; + else + $this->collate = 'utf8_general_ci'; + } elseif ( defined( 'DB_COLLATE' ) ) { + $this->collate = DB_COLLATE; + } + + if ( defined( 'DB_CHARSET' ) ) + $this->charset = DB_CHARSET; + } + + /** + * Sets the connection's character set. + * + * @param resource $dbh The resource given by mysql_connect + * @param string $charset The character set (optional) + * @param string $collate The collation (optional) + */ + function set_charset($dbh, $charset = null, $collate = null) { + if ( !isset($charset) ) + $charset = $this->charset; + if ( !isset($collate) ) + $collate = $this->collate; + if ( $this->has_cap( 'collation', $dbh ) && !empty( $charset ) ) { + if ( function_exists( 'mysql_set_charset' ) && $this->has_cap( 'set_charset', $dbh ) ) { + mysql_set_charset( $charset, $dbh ); + $this->real_escape = true; + } else { + $query = $this->prepare( 'SET NAMES %s', $charset ); + if ( ! empty( $collate ) ) + $query .= $this->prepare( ' COLLATE %s', $collate ); + mysql_query( $query, $dbh ); + } + } + } + /** * Sets the table prefix for the WordPress tables. * @@ -1017,28 +1021,15 @@ class wpdb { $this->last_query = null; } - function db_connect( $query = "SELECT" ) { + /** + * Connect to and select database + */ + function db_connect() { global $db_list, $global_db_list; - if ( ! is_array( $db_list ) ) - return true; - if ( $this->blogs != '' && preg_match("/(" . $this->blogs . "|" . $this->users . "|" . $this->usermeta . "|" . $this->site . "|" . $this->sitemeta . "|" . $this->sitecategories . ")/i",$query) ) { - $action = 'global'; - $details = $global_db_list[ mt_rand( 0, count( $global_db_list ) -1 ) ]; - $this->db_global = $details; - } elseif ( preg_match("/^\\s*(alter table|create|insert|delete|update|replace) /i",$query) ) { - $action = 'write'; - $details = $db_list[ 'write' ][ mt_rand( 0, count( $db_list[ 'write' ] ) -1 ) ]; - $this->db_write = $details; - } else { - $action = ''; - $details = $db_list[ 'read' ][ mt_rand( 0, count( $db_list[ 'read' ] ) -1 ) ]; - $this->db_read = $details; - } + $this->dbh = @mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true ); - $dbhname = "dbh" . $action; - $this->$dbhname = @mysql_connect( $details[ 'db_host' ], $details[ 'db_user' ], $details[ 'db_password' ] ); - if (!$this->$dbhname ) { + if ( !$this->dbh ) { $this->bail( sprintf( /*WP_I18N_DB_CONN_ERROR*/"This either means that the username and password information in your wp-config.php file is incorrect or we can't contact the database server at %s. This could mean your host's database server is down.
If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.
-"/*/WP_I18N_DB_CONN_ERROR*/, $details['db_host'] ), 'db_connect_fail' ); +"/*/WP_I18N_DB_CONN_ERROR*/, $this->dbhost ), 'db_connect_fail' ); } - $this->select( $details[ 'db_name' ], $this->$dbhname ); + + $this->set_charset( $this->dbh ); + + $this->ready = true; + + $this->select( $this->dbname, $this->dbh ); } /** @@ -1083,48 +1079,23 @@ class wpdb { if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) $this->timer_start(); - // use $this->dbh for read ops, and $this->dbhwrite for write ops - // use $this->dbhglobal for gloal table ops - unset( $dbh ); - if( defined( 'WP_USE_MULTIPLE_DB' ) && WP_USE_MULTIPLE_DB ) { - if( $this->blogs != '' && preg_match("/(" . $this->blogs . "|" . $this->users . "|" . $this->usermeta . "|" . $this->site . "|" . $this->sitemeta . "|" . $this->sitecategories . ")/i",$query) ) { - if( false == isset( $this->dbhglobal ) ) { - $this->db_connect( $query ); - } - $dbh =& $this->dbhglobal; - $this->last_db_used = "global"; - } elseif ( preg_match("/^\\s*(alter table|create|insert|delete|update|replace) /i",$query) ) { - if( false == isset( $this->dbhwrite ) ) { - $this->db_connect( $query ); - } - $dbh =& $this->dbhwrite; - $this->last_db_used = "write"; - } else { - $dbh =& $this->dbh; - $this->last_db_used = "read"; - } - } else { - $dbh =& $this->dbh; - $this->last_db_used = "other/read"; - } - - $this->result = @mysql_query( $query, $dbh ); + $this->result = @mysql_query( $query, $this->dbh ); $this->num_queries++; if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) $this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() ); // If there is an error then take note of it.. - if ( $this->last_error = mysql_error( $dbh ) ) { + if ( $this->last_error = mysql_error( $this->dbh ) ) { $this->print_error(); return false; } if ( preg_match( "/^\\s*(insert|delete|update|replace|alter) /i", $query ) ) { - $this->rows_affected = mysql_affected_rows( $dbh ); + $this->rows_affected = mysql_affected_rows( $this->dbh ); // Take note of the insert_id if ( preg_match( "/^\\s*(insert|replace) /i", $query ) ) { - $this->insert_id = mysql_insert_id($dbh); + $this->insert_id = mysql_insert_id($this->dbh); } // Return number of rows affected $return_val = $this->rows_affected; @@ -1544,6 +1515,8 @@ class wpdb { case 'group_concat' : // @since 2.7 case 'subqueries' : // @since 2.7 return version_compare( $version, '4.1', '>=' ); + case 'set_charset' : + return version_compare($version, '5.0.7', '>='); }; return false;