public function selectForm($selected = null, $placeholder = null, array $selectAttributes = [], array $optionAttributes = [] )
	{
		$selectAttributesString = '';
		foreach ($selectAttributes as $key => $value)
		{
			$selectAttributesString = $selectAttributesString . " " . $key . "='" . $value ."'";
		}

		$optionAttributesString = '';
		foreach ($optionAttributes as $key => $value)
		{
			$optionAttributesString = $optionAttributesString . " " . $key . "='" . $value ."'";
		}

		$string = "<select". $selectAttributesString .">\n";

		if (isset($placeholder) && (empty($selected)))
		{
		     $placeholder = "<option value='' disabled selected>{$placeholder}</option>";
		}
		else
		{
		      $placeholder = null;
		}

		$string = $string . $placeholder;
		foreach ($this->timezoneList as $key => $value)
		{
			if ($selected == $value) {
				$selectedString = "selected='" . $value . "'";
			} else {
				$selectedString = '';
			}

			$string = $string . "<option value='" . $value . "'" . $optionAttributesString . " " . $selectedString . ">" . $key . "</option>\n";
		}
		$string = $string . "</select>";

		return $string;
	}
public function selectForm($selected = null, $placeholder = null, array $selectAttributes = [], array $optionAttributes = [] )
	{
		$selectAttributesString = '';
		foreach ($selectAttributes as $key => $value)
		{
			$selectAttributesString = $selectAttributesString . " " . $key . "='" . $value ."'";
		}

		$optionAttributesString = '';
		foreach ($optionAttributes as $key => $value)
		{
			$optionAttributesString = $optionAttributesString . " " . $key . "='" . $value ."'";
		}

		$string = "<select". $selectAttributesString .">\n";

		if (isset($placeholder) && (empty($selected)))
		{
		     $placeholder = "<option value='' disabled selected>{$placeholder}</option>";
		}
		else
		{
		      $placeholder = null;
		}

		$string = $string . $placeholder;
		foreach ($this->timezoneList as $key => $value)
		{
			if ($selected == $value) {
				$selectedString = "selected='" . $value . "'";
			} else {
				$selectedString = '';
			}

			$string = $string . "<option value='" . $value . "'" . $optionAttributesString . " " . $selectedString . ">" . $key . "</option>\n";
		}
		$string = $string . "</select>";

		return $string;
	}
@param null $selected
@param null $placeholder
@param array $selectAttributes
@param array $optionAttributes

@return string