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<?php |
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namespace UCD\Unicode\Character\Properties\Numericity; |
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use UCD\Exception\InvalidArgumentException; |
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class RationalNumber |
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{ |
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const REGEX_FRACTION = '#^(?P<sign>[+-]?)(?P<numerator>[0-9]+)(/(?P<denominator>[0-9]+))?$#'; |
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/** |
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* @var int |
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*/ |
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private $numerator; |
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/** |
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* @var int |
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*/ |
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private $denominator; |
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/** |
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* @var bool |
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*/ |
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private $negative; |
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/** |
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* @param int $numerator |
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* @param int $denominator |
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* @param bool $negative |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct($numerator, $denominator, $negative) |
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{ |
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if ($denominator === 0) { |
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throw new InvalidArgumentException('Zero denominator'); |
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} |
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$this->numerator = $numerator; |
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$this->denominator = $denominator; |
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$this->negative = $negative; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isFraction() |
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{ |
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return $this->denominator !== 1; |
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} |
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/** |
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* @return int |
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*/ |
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public function getNumerator() |
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{ |
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return $this->numerator; |
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} |
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/** |
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* @return int |
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*/ |
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public function getDenominator() |
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{ |
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return $this->denominator; |
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} |
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/** |
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* @return boolean |
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*/ |
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public function isNegative() |
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{ |
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return $this->negative; |
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} |
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/** |
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* @param string $value |
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* @return RationalNumber |
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* @throws InvalidArgumentException |
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*/ |
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public static function fromString($value) |
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{ |
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if (preg_match(self::REGEX_FRACTION, $value, $matches) !== 1) { |
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throw new InvalidArgumentException('Invalid number'); |
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} |
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$numerator = $matches['numerator']; |
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$denominator = isset($matches['denominator']) ? $matches['denominator'] : 1; |
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$isNegative = isset($matches['sign']) && $matches['sign'] === '-'; |
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return new self($numerator, $denominator, $isNegative); |
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} |
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/** |
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* @param self $number |
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* @return string |
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*/ |
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public static function toString(self $number) |
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{ |
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$string = $number->isNegative() ? '-' : ''; |
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$string .= $number->getNumerator(); |
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if ($number->isFraction()) { |
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$string .= sprintf('/%d', $number->getDenominator()); |
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} |
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return $string; |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return self::toString($this); |
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} |
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} |
nick-jones /
php-ucd
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: