src/Zend/Locale/Format.php
public static function isInteger($value, array $options = array())
    {
        if (!self::isNumber($value, $options)) {
            return false;
        }

        if (self::getInteger($value, $options) == self::getFloat($value, $options)) {
            return true;
        }

        return false;
    }
public static function isInteger($value, array $options = array())
    {
        if (!self::isNumber($value, $options)) {
            return false;
        }

        if (self::getInteger($value, $options) == self::getFloat($value, $options)) {
            return true;
        }

        return false;
    }
public static function isInteger ( $ value , array $ options = array ( ) ) { if ( ! self :: isNumber ( $ value , $ options ) ) { return false ; } if ( self :: getInteger ( $ value , $ options ) == self :: getFloat ( $ value , $ options ) ) { return true ; } return false ; }
Returns if a integer was found

@param   string  $input    Localized number string
@param   array   $options  Options: locale. See {@link setOptions()} for details.
@return  boolean           Returns true if a integer was found
Returns if a integer was found