mysqli::ping

mysqli_ping

(PHP 5, PHP 7, PHP 8)

mysqli::ping -- mysqli_pingPings a server connection, or tries to reconnect if the connection has gone down

Avviso

This function has been DEPRECATED as of PHP 8.4.0. Relying on this function is highly discouraged.

Descrizione

Stile orientato agli oggetti

#[\Deprecated]
public mysqli::ping(): bool

Stile procedurale

#[\Deprecated]
mysqli_ping(mysqli $mysql): bool

Checks whether the connection to the server is working. If it has gone down and global option mysqli.reconnect is enabled, an automatic reconnection is attempted.

Nota: The php.ini setting mysqli.reconnect is ignored by the mysqlnd driver, so automatic reconnection is never attempted.

This function can be used by clients that remain idle for a long while, to check whether the server has closed the connection and reconnect if necessary.

Elenco dei parametri

link

Solo nello stile procedurale: un identificatore restituito da mysqli_connect() o mysqli_init()

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Errori/Eccezioni

If mysqli error reporting is enabled (MYSQLI_REPORT_ERROR) and the requested operation fails, a warning is generated. If, in addition, the mode is set to MYSQLI_REPORT_STRICT, a mysqli_sql_exception is thrown instead.

Log delle modifiche

Versione Descrizione
8.4.0 Both mysqli::ping() and mysqli_ping() are now deprecated. The reconnect feature has not been available as of PHP 8.2.0, making this function obsolete.

Esempi

Example #1 mysqli::ping() example

Stile orientato agli oggetti

<?php
$mysqli
= new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if ($mysqli->connect_errno) {
printf("Connect failed: %s\n", $mysqli->connect_error);
exit();
}

/* check if server is alive */
if ($mysqli->ping()) {
printf ("Our connection is ok!\n");
} else {
printf ("Error: %s\n", $mysqli->error);
}

/* close connection */
$mysqli->close();
?>

Stile procedurale

<?php
$link
= mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}

/* check if server is alive */
if (mysqli_ping($link)) {
printf ("Our connection is ok!\n");
} else {
printf ("Error: %s\n", mysqli_error($link));
}

/* close connection */
mysqli_close($link);
?>

I precedenti esempi visualizzeranno:

Our connection is ok!