(PHP 4 >= 4.3.0, PHP 5, PHP 7)
pg_ping — Ping database connection
pg_ping ([ resource $connection ] ) : bool
pg_ping() pings a database connection and tries to reconnect it if it is broken.
connection
PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
Returns true on success or false on failure.
Example #1 pg_ping() example
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.\n";
exit;
}
if (!pg_ping($conn))
die("Connection is broken\n");
?>
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https://www.php.net/manual/en/function.pg-ping.php