(PHP 5, PHP 7 < 7.4.0)
ibase_service_detach — Disconnect from the service manager
service_handleA previously created connection to the database server.
Example #1 ibase_service_detach() example
<?php
    // Attach to the remote Firebird server by ip address
    if (($service = ibase_service_attach('10.1.1.199', 'sysdba', 'masterkey')) != FALSE) {
        
        // Successfully attached. 
        // Fetch server version (something like 'LI-V3.0.4.33054 Firebird 3.0')
        $server_version  = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
        // Fetch server implementation (something like 'Firebird/Linux/AMD/Intel/x64')
        $server_implementation = ibase_server_info($service, IBASE_SVC_IMPLEMENTATION);
        // Detach from server (disconnect)
        if(ibase_service_detach($service) == FALSE) {
            echo "Error on service detach.";
        }
        else {
            echo "Successfully detached from service.";
        }
    }
    else {
        // Output message on error
        $conn_error = ibase_errmsg();
        die($conn_error);
    }
?>