file1.php

foreach( array( 2, 3, 4, 5, 9 ) as $form_id ) {

# Basic Usage
new GW_Submission_Limit( array(
    
    'form_id' => $form_id,
    'limit_by' => 'field_value',
    'limit' => array(
        // "18" is your field ID, "1" is your limit for this field ID
        18 => 1 
    ),
    'time_period' => 60 * 60 * 24 * 10,
    'limit_message' => 'Ati trimis deja o solicitare in ultimele 10 zile.'
) );

}