wpdb::select()
Selects a database using the current or provided database connection.
The database name will be changed based on the current database connection. On failure, the execution will bail and display a DB error.
Метод класса: wpdb{}
Хуков нет.
Возвращает
null
. Ничего (null).
Использование
global $wpdb; $wpdb->select( $db, $dbh );
- $db(строка) (обязательный)
- Database name.
- $dbh(mysqli)
- Database connection.
По умолчанию: current database handle
Список изменений
С версии 0.71 | Введена. |
Код wpdb::select() wpdb::select WP 6.6.2
public function select( $db, $dbh = null ) { if ( is_null( $dbh ) ) { $dbh = $this->dbh; } $success = mysqli_select_db( $dbh, $db ); if ( ! $success ) { $this->ready = false; if ( ! did_action( 'template_redirect' ) ) { wp_load_translations_early(); $message = '<h1>' . __( 'Cannot select database' ) . "</h1>\n"; $message .= '<p>' . sprintf( /* translators: %s: Database name. */ __( 'The database server could be connected to (which means your username and password is okay) but the %s database could not be selected.' ), '<code>' . htmlspecialchars( $db, ENT_QUOTES ) . '</code>' ) . "</p>\n"; $message .= "<ul>\n"; $message .= '<li>' . __( 'Are you sure it exists?' ) . "</li>\n"; $message .= '<li>' . sprintf( /* translators: 1: Database user, 2: Database name. */ __( 'Does the user %1$s have permission to use the %2$s database?' ), '<code>' . htmlspecialchars( $this->dbuser, ENT_QUOTES ) . '</code>', '<code>' . htmlspecialchars( $db, ENT_QUOTES ) . '</code>' ) . "</li>\n"; $message .= '<li>' . sprintf( /* translators: %s: Database name. */ __( 'On some systems the name of your database is prefixed with your username, so it would be like <code>username_%1$s</code>. Could that be the problem?' ), htmlspecialchars( $db, ENT_QUOTES ) ) . "</li>\n"; $message .= "</ul>\n"; $message .= '<p>' . sprintf( /* translators: %s: Support forums URL. */ __( 'If you do not know how to set up a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href="%s">WordPress support forums</a>.' ), __( 'https://wordpress.org/support/forums/' ) ) . "</p>\n"; $this->bail( $message, 'db_select_fail' ); } } }