function image_effect_integer_validate

Element validate handler to ensure an integer pixel value.

The property #allow_negative = TRUE may be set to allow negative integers.

File

modules/image/image.admin.inc, line 494

Code

function image_effect_integer_validate($element, &$form_state) {
    $value = empty($element['#allow_negative']) ? $element['#value'] : preg_replace('/^-/', '', $element['#value']);
    if ($element['#value'] != '' && (!is_numeric($value) || intval($value) <= 0)) {
        if (empty($element['#allow_negative'])) {
            form_error($element, t('!name must be an integer.', array(
                '!name' => $element['#title'],
            )));
        }
        else {
            form_error($element, t('!name must be a positive integer.', array(
                '!name' => $element['#title'],
            )));
        }
    }
}