12-08-2007
that depends on what protocol you use, for one thing. i guess tcp/ip. so if you have a connection loss, ie pull cable and put back in, the connection will remain as long as you dont quit it or some system specific timeout applies. if you want a "soft" reconnect, meaning the connection was lost, and a client directly starts a new connection, you have to have some way to identify that new connection as the clients one, and replace the clients old stale connection with the new one.
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LEARN ABOUT PHP
maxdb_ping
MAXDB_PING(3) 1 MAXDB_PING(3)
maxdb_ping - Pings a server connection, or tries to reconnect if the connection has gone down
Procedural style
SYNOPSIS
bool maxdb_ping (resource $link)
DESCRIPTION
Object oriented style
bool maxdb::ping (void )
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 recon-
nect if necessary.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s
", maxdb_connect_error());
exit();
}
/* check if server is alive */
if ($maxdb->ping()) {
printf ("Our connection is ok!
");
} else {
printf ("Error: %s
", $maxdb->error);
}
/* close connection */
$maxdb->close();
?>
Example #2
Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s
", maxdb_connect_error());
exit();
}
/* check if server is alive */
if (maxdb_ping($link)) {
printf ("Our connection is ok!
");
} else {
printf ("Error: %s
", maxdb_error($link));
}
/* close connection */
maxdb_close($link);
?>
The above example will output something similar to:
Our connection is ok!
PHP Documentation Group MAXDB_PING(3)