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<?php |
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/** |
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* Linna Filter |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2018, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types = 1); |
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namespace Linna\Filter\Rules; |
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use UnexpectedValueException; |
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/** |
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* Check if a number in inside or outside an interval using ><, <>, >=<, <=> operators. |
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*/ |
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class NumberIntervall extends AbstractNumber |
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{ |
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/** |
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* @var array Arguments expected. |
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*/ |
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private $arguments = ['string', 'number', 'number']; |
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/** |
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* Validate. |
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* |
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* @param int|float|string $received |
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* @param string $operator |
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* @param int|float|string $min |
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* @param int|float|string $max |
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* |
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* @return bool |
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*/ |
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public function validate($received, string $operator, $min, $max): bool |
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{ |
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if (!is_numeric($received)) { |
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return true; |
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} |
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if ($this->switchOperator($operator, $received, $min, $max)) { |
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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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* Perform correct operation from passed operator. |
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* |
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* @param string $operator |
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* @param int|float|string $numberReceived |
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* @param int|float|string $min |
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* @param int|float|string $max |
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* |
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* @return bool |
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* |
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* @throws UnexpectedValueException if unknown operator is provided. |
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*/ |
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private function switchOperator(string $operator, &$numberReceived, &$min, &$max): bool |
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{ |
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switch ($operator) { |
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case '><': //between exclusive |
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return $numberReceived > $min && $numberReceived < $max; |
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case '>=<': //between inclusive |
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return $numberReceived >= $min && $numberReceived <= $max; |
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case '<>': //outside intervall exclusive |
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return $numberReceived < $min || $numberReceived > $max; |
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case '<=>': //outside intervall inclusive |
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return $numberReceived <= $min || $numberReceived >= $max;; |
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default: |
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throw new UnexpectedValueException("Unknown comparson operator ({$operator}). Permitted ><, <>, >=<, <=>"); |
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} |
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} |
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} |
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