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Revision 2049 Revision 2107
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	 * @var	int
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	 * @var	int
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	 */
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	 */
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	public $compression_level = 2;
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	public $compression_level = 2;
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	/**
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	/**
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	 * mbstring.func_override flag
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	 * mbstring.func_overload flag
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	 *
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	 *
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	 * @var	bool
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	 * @var	bool
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	 */
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	 */
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	protected static $func_override;
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	protected static $func_overload;
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	/**
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	/**
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	 * Initialize zip compression class
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	 * Initialize zip compression class
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	 *
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	 *
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	 * @return	void
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	 * @return	void
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	 */
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	 */
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	public function __construct()
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	public function __construct()
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	{
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	{
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		isset(self::$func_override) OR self::$func_override = (extension_loaded('mbstring') && ini_get('mbstring.func_override'));
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		isset(self::$func_overload) OR self::$func_overload = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'));
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	 * @param	string	$str
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	 * @param	string	$str
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	 * @return	int
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	 * @return	int
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	 */
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	 */
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	protected static function strlen($str)
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	protected static function strlen($str)
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	{
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	{
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		return (self::$func_override)
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		return (self::$func_overload)
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			? mb_strlen($str, '8bit')
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			? mb_strlen($str, '8bit')
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			: strlen($str);
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			: strlen($str);
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	}
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	}
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	 * @param	int	$length
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	 * @param	int	$length
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	 * @return	string
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	 * @return	string
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	 */
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	 */
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	protected static function substr($str, $start, $length = NULL)
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	protected static function substr($str, $start, $length = NULL)
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	{
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	{
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		if (self::$func_override)
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		if (self::$func_overload)
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		{
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		{
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			// mb_substr($str, $start, null, '8bit') returns an empty
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			// mb_substr($str, $start, null, '8bit') returns an empty
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			// string on PHP 5.3
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			// string on PHP 5.3
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			isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
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			isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start);
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			return mb_substr($str, $start, $length, '8bit');
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			return mb_substr($str, $start, $length, '8bit');