RequestCheckUtil.php

<?php
class RequestCheckUtil {

	public static function checkNotNull($value, $fieldName) {

		if (self::checkEmpty($value)) {
			throw new Exception("client-check-error:Missing Required Arguments: " . $fieldName, 40);
		}
	}

	public static function checkMaxLength($value, $maxLength, $fieldName) {
		if (!self::checkEmpty($value) && mb_strlen($value, "UTF-8") > $maxLength) {
			throw new Exception("client-check-error:Invalid Arguments:the length of " . $fieldName . " can not be larger than " . $maxLength . ".", 41);
		}
	}

	public static function checkMaxListSize($value, $maxSize, $fieldName) {

		if (self::checkEmpty($value)) {
			return;
		}

		$list = preg_split("/,/", $value);
		if (count($list) > $maxSize) {
			throw new Exception("client-check-error:Invalid Arguments:the listsize(the string split by \",\") of " . $fieldName . " must be less than " . $maxSize . " .", 41);
		}
	}

	public static function checkMaxValue($value, $maxValue, $fieldName) {

		if (self::checkEmpty($value)) {
			return;
		}

		self::checkNumeric($value, $fieldName);

		if ($value > $maxValue) {
			throw new Exception("client-check-error:Invalid Arguments:the value of " . $fieldName . " can not be larger than " . $maxValue . " .", 41);
		}
	}

	public static function checkMinValue($value, $minValue, $fieldName) {

		if (self::checkEmpty($value)) {
			return;
		}

		self::checkNumeric($value, $fieldName);

		if ($value < $minValue) {
			throw new Exception("client-check-error:Invalid Arguments:the value of " . $fieldName . " can not be less than " . $minValue . " .", 41);
		}
	}

	protected static function checkNumeric($value, $fieldName) {
		if (!is_numeric($value)) {
			throw new Exception("client-check-error:Invalid Arguments:the value of " . $fieldName . " is not number : " . $value . " .", 41);
		}

	}

	public static function checkEmpty($value) {
		if (!isset($value)) {
			return true;
		}

		if ($value === null) {
			return true;
		}

		if (trim($value) === "") {
			return true;
		}

		return false;
	}

}
?>