ping
mysqli::ping
mysqli_ping
Pings a server connection, or tries to reconnect if the connection has gone down
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#[\Deprecated(since: '8.4', message: 'because the reconnect feature has been removed in PHP 8.2 and this method is now redundant')]
public
bool
mysqli::ping
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#[\Deprecated(since: '8.4', message: 'because the reconnect feature has been removed in PHP 8.2 and this function is now redundant')]
bool
mysqli_ping
mysqli
mysql
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.
[!NOTE] The ENTITY 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.
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| ENTITY | ENTITY |
|---|---|
| 8.4.0 | Both mysqli::ping and mysqli_ping are now deprecated. As of PHP 8.2.0, the reconnect feature is no longer available, making this function obsolete. |
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mysqli::ping example
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<?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();
?>
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<?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);
?>
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Our connection is ok!
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