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# pg_get_pid

(no version information, might be only in CVS)

pg_get_pid -- Ping database connection

## Description

int pg_get_pid ( resource connection)

pg_get_pid() gets backend (database server process) PID. PID is useful to check if `NOTIFY` message is sent from other process or not.

See also pg_get_notify()

Example 1. PostgreSQL backend PID

    <?php
    $conn = pg_pconnect ("dbname=publisher");
    if (!$conn) {
        echo "An error occured.\n";
        exit;
    }

    // Backend process PID. Use PID with pg_get_notify()
    $pid = pg_get_pid($conn);
    ?>

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