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PHP Quiz PHP CertificatePHP mysql_ping() Function
Complete PHP MySQL Reference
Definition and Usage
The mysql_ping() function pings a server connection or reconnects to it if there is no connection.
This function returns TRUE if there is a connection, or FALSE on failure.
Syntax
mysql_ping(connection)
| Parameter | Description |
|---|---|
| connection | Optional. Specifies the MySQL connection. If not specified, the last connection opened by mysql_connect() or mysql_pconnect() is used. |
Tips and Notes
Note: This function can be used by scripts that remain idle for a long time.
Example
<?php
$con = mysql_connect("localhost", "peter", "abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
$db_selected = mysql_select_db("test_db", $con);
$sql = "SELECT * from Person";
$result = mysql_query($sql,$link);
mysql_ping();
// some code
mysql_close($con);
?>
$con = mysql_connect("localhost", "peter", "abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
$db_selected = mysql_select_db("test_db", $con);
$sql = "SELECT * from Person";
$result = mysql_query($sql,$link);
mysql_ping();
// some code
mysql_close($con);
?>
Complete PHP MySQL Reference
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