MysqlndUhConnection::ping
(PECL mysqlnd-uh >= 1.0.0-alpha)
MysqlndUhConnection::ping — Pings a server connection, or tries to reconnect if the connection has gone down
Описание
public bool MysqlndUhConnection::ping
( mysqlnd_connection
$connection
)Pings a server connection, or tries to reconnect if the connection has gone down.
Список параметров
-
connection -
Mysqlnd connection handle. Do not modify!
Возвращаемые значения
Returns TRUE on success.
Otherwise, returns FALSE
Примеры
Пример #1 MysqlndUhConnection::ping() example
<?php
class proxy extends MysqlndUhConnection {
public function ping($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::ping($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->ping();
?>
Результат выполнения данного примера:
proxy::ping(array ( 0 => NULL, )) proxy::ping returns true
Смотрите также
- mysqlnd_uh_set_connection_proxy() - Installs a proxy for mysqlnd connections
- mysqli_ping() - Проверяет работоспособность соединения или пытается переподключиться, если соединение разорвано
- mysql_ping() - Проверяет соединение с сервером и пересоединяется при необходимости
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- MySQL Drivers and Plugins
- Mysqlnd user handler plugin
- Функция MysqlndUhConnection::changeUser() - Changes the user of the specified mysqlnd database connection
- Функция MysqlndUhConnection::charsetName() - Returns the default character set for the database connection
- Функция MysqlndUhConnection::close() - Closes a previously opened database connection
- Функция MysqlndUhConnection::connect() - Open a new connection to the MySQL server
- Функция MysqlndUhConnection::__construct() - The __construct purpose
- Функция MysqlndUhConnection::endPSession() - End a persistent connection
- MysqlndUhConnection::escapeString
- Функция MysqlndUhConnection::getAffectedRows() - Gets the number of affected rows in a previous MySQL operation
- Функция MysqlndUhConnection::getErrorNumber() - Returns the error code for the most recent function call
- Функция MysqlndUhConnection::getErrorString() - Returns a string description of the last error
- Функция MysqlndUhConnection::getFieldCount() - Returns the number of columns for the most recent query
- Функция MysqlndUhConnection::getHostInformation() - Returns a string representing the type of connection used
- Функция MysqlndUhConnection::getLastInsertId() - Returns the auto generated id used in the last query.
- Функция MysqlndUhConnection::getLastMessage() - Retrieves information about the most recently executed query
- Функция MysqlndUhConnection::getProtocolInformation() - Returns the version of the MySQL protocol used
- Функция MysqlndUhConnection::getServerInformation() - Returns the version of the MySQL server
- Функция MysqlndUhConnection::getServerStatistics() - Gets the current system status
- Функция MysqlndUhConnection::getServerVersion() - Returns the version of the MySQL server as an integer
- Функция MysqlndUhConnection::getSqlstate() - Returns the SQLSTATE error from previous MySQL operation
- Функция MysqlndUhConnection::getStatistics() - Returns statistics about the client connection.
- Функция MysqlndUhConnection::getThreadId() - Returns the thread ID for the current connection
- Функция MysqlndUhConnection::getWarningCount() - Returns the number of warnings from the last query for the given link
- Функция MysqlndUhConnection::init() - Initialize mysqlnd connection
- Функция MysqlndUhConnection::killConnection() - Asks the server to kill a MySQL thread
- Функция MysqlndUhConnection::listFields() - List MySQL table fields
- Функция MysqlndUhConnection::listMethod() - Wrapper for assorted list commands
- Функция MysqlndUhConnection::moreResults() - Check if there are any more query results from a multi query
- Функция MysqlndUhConnection::nextResult() - Prepare next result from multi_query
- Функция MysqlndUhConnection::ping() - Pings a server connection, or tries to reconnect if the connection has gone down
- Функция MysqlndUhConnection::query() - Performs a query on the database
- Функция MysqlndUhConnection::queryReadResultsetHeader() - Read a result set header
- Функция MysqlndUhConnection::reapQuery() - Get result from async query
- Функция MysqlndUhConnection::refreshServer() - Flush or reset tables and caches
- Функция MysqlndUhConnection::restartPSession() - Restart a persistent mysqlnd connection
- Функция MysqlndUhConnection::selectDb() - Selects the default database for database queries
- Функция MysqlndUhConnection::sendClose() - Sends a close command to MySQL
- Функция MysqlndUhConnection::sendQuery() - Sends a query to MySQL
- Функция MysqlndUhConnection::serverDumpDebugInformation() - Dump debugging information into the log for the MySQL server
- Функция MysqlndUhConnection::setAutocommit() - Turns on or off auto-committing database modifications
- Функция MysqlndUhConnection::setCharset() - Sets the default client character set
- Функция MysqlndUhConnection::setClientOption() - Sets a client option
- Функция MysqlndUhConnection::setServerOption() - Sets a server option
- Функция MysqlndUhConnection::shutdownServer() - The shutdownServer purpose
- Функция MysqlndUhConnection::simpleCommand() - Sends a basic COM_* command
- Функция MysqlndUhConnection::simpleCommandHandleResponse() - Process a response for a basic COM_* command send to the client
- Функция MysqlndUhConnection::sslSet() - Used for establishing secure connections using SSL
- Функция MysqlndUhConnection::stmtInit() - Initializes a statement and returns a resource for use with mysqli_statement::prepare
- Функция MysqlndUhConnection::storeResult() - Transfers a result set from the last query
- Функция MysqlndUhConnection::txCommit() - Commits the current transaction
- Функция MysqlndUhConnection::txRollback() - Rolls back current transaction
- Функция MysqlndUhConnection::useResult() - Initiate a result set retrieval
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