TYPO3 Core

860 if (\TYPO3\CMS\Core\Utility\VersionNumberUtility::convertVersionNumberToInteger(TYPO3_version) >= '7001000') {
861 \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\SignalSlot\Dispatcher::class)->connect(

So the code is executed even though the TYPO3 version is 6.2.x :(

Hey Wouter,
thanks a lot.
Problem 1: Do you know which php version can solve the problem? Is it a general problem or only a problem with cal?

Best,
Andrea

Hmmm, of course the exception is related to the php version which is below 5.5 obviously. But this is not the point! Andrea did an update on cal and line 860 of cal's ext_localconf.php returned TRUE even though - as she says - TYPO3 6.2.x was installed.

So the question is: why?

The ext_localconf.php are cached and concatenated and then evaluated. My guess is that this is the problem. You cannot use PHP 5.5 features is lower versions without breaking it.

Just in case other developers encounter this, it's a new PHP Feature introduced in PHP 5.5: http://php.net/manual/en/migration55.new-features.php#migration55.new-features.class-name
That's why the parser is complaining about a T_CLASS as it's a reserved keyword before 5.5 where it became a feature.