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<?php |
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/** |
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* Helper class that provides useful php functions. |
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* |
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* @author Vettivel Satheez <[email protected]> |
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* |
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* @link https://github.com/satheez |
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* |
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* @license MIT |
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*/ |
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namespace Sa\Helper; |
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class Validate |
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{ |
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/** |
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* Check whether the given value is a type of 'string' or not. |
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* |
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* @param $str |
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* |
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* @return bool |
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*/ |
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public static function isValidString($str): bool |
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{ |
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return is_string($str); |
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} |
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/** |
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* Check whether the string is empty or not. |
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* |
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* @param $str |
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* |
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* @return bool |
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*/ |
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public static function isEmptyString($str): bool |
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{ |
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if (empty($str) || !self::isValidString($str)) { |
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return true; |
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} |
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return strlen(trim($str)) === 0; |
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} |
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/** |
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* Check whether the given string value length b/w given range. |
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* |
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* @param $str |
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* @param int $minLength |
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* @param int|null $maxLength |
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* |
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* @return bool |
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*/ |
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public static function isStringWithRange($str, int $minLength = 0, ?int $maxLength = null): bool |
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{ |
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if (!empty($minLength) && strlen($str) < $minLength) { |
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return false; |
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} |
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if (!empty($maxLength) && strlen($str) > $maxLength) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* validate string without space (by excluding space). |
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* |
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* @param $str |
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* @param int $minLength |
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* @param int|null $maxLength |
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* |
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* @return bool |
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*/ |
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public static function isStringWithRangeExcludeSpace(string $str, int $minLength = 0, ?int $maxLength = null): bool |
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{ |
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return self::isStringWithRange(trim($str), $minLength, $maxLength); |
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} |
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/** |
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* Validate int value. |
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* |
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* @param $val |
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* @param bool $allowNegativeValue |
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* |
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* @return bool |
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*/ |
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public static function isValidInt($val, bool $allowNegativeValue = true): bool |
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{ |
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if (!filter_var($val, FILTER_VALIDATE_INT)) { |
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return false; |
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} |
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return $allowNegativeValue ? true : $val >= 0; |
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} |
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/** |
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* Validate int value with range. |
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* |
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* @param $val |
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* @param int|null $minLength |
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* @param int|null $maxLength |
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* |
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* @return bool |
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*/ |
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public static function intWithRange($val, ?int $minLength = null, ?int $maxLength = null) |
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{ |
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if (!self::isValidInt($val)) { |
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return false; |
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} |
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$val = (int) $val; |
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if ($minLength !== null && $val < $minLength) { |
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return false; |
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} |
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if ($maxLength !== null && $val > $maxLength) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Validate float value. |
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* |
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* @param $val |
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* @param bool $allowNegativeValue |
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* |
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* @return bool |
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*/ |
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public static function isValidFloat($val, bool $allowNegativeValue = true): bool |
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{ |
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return filter_var($val, FILTER_VALIDATE_FLOAT); |
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} |
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/** |
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* Validate float value with range. |
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* @param $val |
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* @param float|null $minValue |
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* @param float|null $maxValue |
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* |
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* @return bool |
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*/ |
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public static function floatWithRange($val, ?float $minValue = null, ?float $maxValue = null) |
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{ |
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if (!self::isValidFloat($val)) { |
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return false; |
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} |
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$val = floatval($val); |
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if ($minValue !== null && $val < $minValue) { |
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return false; |
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} |
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if ($maxValue !== null && $val > $maxValue) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Validate datetime. |
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* @param $givenValue |
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* @param string $format |
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* |
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* @return bool |
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*/ |
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public static function isValidDate($givenValue, string $format = 'Y-m-d H:i:s') |
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{ |
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if (self::isEmptyString($givenValue)) { |
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return false; |
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} |
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$generatedDateValue = \DateTime::createFromFormat($format, $givenValue); |
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return $generatedDateValue && $generatedDateValue->format($format) === $givenValue && \DateTime::getLastErrors()['warning_count'] == 0 && \DateTime::getLastErrors()['error_count'] == 0; |
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} |
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/** |
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* Check whether given date is in the past or not. |
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* |
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* @param $date |
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* @param int|null $now |
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* @param string $format |
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* |
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* @return bool |
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*/ |
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public static function isPastDate($date, ?int $now = 0, string $format = 'Y-m-d'): bool |
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{ |
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if (!self::isValidDate($date, $format)) { |
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return false; |
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} |
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if (empty($now)) { |
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$now = time(); |
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} |
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$d = \DateTime::createFromFormat($format, $date); |
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return $d->getTimestamp() < $now; |
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} |
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/** |
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* Check given date is in the future or not. |
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* |
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* @param $date |
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* @param int|null $now |
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* @param string $format |
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* |
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* @return bool |
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*/ |
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public static function isFutureDate($date, ?int $now = 0, string $format = 'Y-m-d'): bool |
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{ |
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if (!self::isValidDate($date, $format)) { |
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return false; |
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} |
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if (empty($now)) { |
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$now = time(); |
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} |
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$d = \DateTime::createFromFormat($format, $date); |
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return $d->getTimestamp() > $now; |
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} |
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/** |
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* Validate email. |
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* @param string $email |
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* |
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* @return bool |
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*/ |
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public static function isValidEmail(string $email): bool |
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{ |
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return filter_var($email, FILTER_VALIDATE_EMAIL); |
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} |
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/** |
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* Validate url. |
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* |
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* @param string $url |
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* |
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* @return bool |
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*/ |
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public static function isValidURL(string $url): bool |
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{ |
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return filter_var($url, FILTER_VALIDATE_URL); |
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} |
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/** |
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* validate IP address. |
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* |
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* @param string $ip |
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* |
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* @return bool |
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*/ |
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public static function isValidIP(string $ip): bool |
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{ |
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return filter_var($ip, FILTER_VALIDATE_IP); |
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} |
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} |
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.