maxdb_ping
maxdb::ping
(PECL maxdb >= 1.0)
maxdb_ping -- maxdb::ping — Pings a server connection, or tries to reconnect if the connection has gone down
Beschreibung
Prozeduraler Stil
maxdb_ping
( resource
$link
) : boolObjektorientierter Stil
maxdb::ping
( void
) : bool
Checks whether the connection to the server is working. If it has gone
down, and global option maxdb.reconnect is enabled
an automatic reconnection is 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.
Rückgabewerte
Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.
Beispiele
Beispiel #1 Objektorientierter Stil
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* check if server is alive */
if ($maxdb->ping()) {
printf ("Our connection is ok!\n");
} else {
printf ("Error: %s\n", $maxdb->error);
}
/* close connection */
$maxdb->close();
?>
Beispiel #2 Prozeduraler Stil
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* check if server is alive */
if (maxdb_ping($link)) {
printf ("Our connection is ok!\n");
} else {
printf ("Error: %s\n", maxdb_error($link));
}
/* close connection */
maxdb_close($link);
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Our connection is ok!
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