Strip pricing on five fields in one function

// http://www.gravityhelp.com/forums/topic/change-option-value?replies=19#post-103945
// this code will apply to form 1 only
add_action('gform_pre_submission_filter_1', 'strip_pricing');
function strip_pricing($form) {
        $field_pair = array('input_1' => 'input_57',    // envia el Desayuno elegido al ZOHO
                            'input_2' => 'input_58',    // envia el Nº de personas  al ZOHO
                            'input55' => 'input_59',    // envia los extras al ZOHO
                            'input_27' => 'input_60',   // envia forma de pago al ZOHO
                            'input_52' => 'input_61');  // envia la población al ZOHO

        // define the separator one time
        $needle   = '|';

        // loop through all the field pairs
        // the unmodified value is stored in $_POST[$original]
        // and after modification it will be assigned to $_POST[$hidden]
        foreach ($array as $original => $hidden) {
            $haystack = $_POST[$original];
            $result = substr($haystack, 0, strpos($haystack, $needle));
            $_POST[$hidden] = $result;
        }

        // return the form
        return $form;
}