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<?php
namespace Recurrence\RruleTransformer;
use Recurrence\Recurrence;
/**
* Class AbstractRruleTransformer
* @package Recurrence\RruleTransformer
*/
abstract class AbstractRruleTransformer
{
* @param string $rRule
* @return integer
public function transform($rRule)
if (preg_match(sprintf('/%s=%s/', $this::RRULE_PARAMETER, $this::RRULE_PATTERN), $rRule, $matches)) {
return (is_numeric($matches[1])) ? (int) $matches[1] : $matches[1];
}
$this->throwExceptionOnInvalidParameter($rRule, $this::RRULE_PARAMETER);
return null;
* @param string $ruleKey
* @return bool
public function throwExceptionOnInvalidParameter($rRule, $ruleKey)
if ((preg_match(sprintf('/%s=/', $ruleKey), $rRule, $matches) === 1)) {
throw new \InvalidArgumentException(sprintf('RRULE invalid [%s] option', $ruleKey));
Samffy /
recurrence
