/**
* Defined by Postman_Zend_Validate_Interface
*
* Returns true if and only if $value is a valid integer
*
* @param string|integer $value
* @return boolean
*/
public function isValid($value)
{
if (!is_string($value) && !is_int($value) && !is_float($value)) {
$this->_error(self::INVALID);
return false;
}
if (is_int($value)) {
return true;
}
$this->_setValue($value);
if ($this->_locale === null) {
$locale = localeconv();
$valueFiltered = str_replace($locale['decimal_point'], '.', $value);
$valueFiltered = str_replace($locale['thousands_sep'], '', $valueFiltered);
if (strval(intval($valueFiltered)) != $valueFiltered) {
$this->_error(self::NOT_INT);
return false;
}
} else {
try {
if (!Postman_Zend_Locale_Format::isInteger($value, array('locale' => $this->_locale))) {
$this->_error(self::NOT_INT);
return false;
}
} catch (Postman_Zend_Locale_Exception $e) {
$this->_error(self::NOT_INT);
return false;
}
}
return true;
}
