TYPO3 Core

The symfony expression language has no type check, which results in PHP Warnings in case the in expression is used without an array.
example:

[1 in "foo"] will throw a PHP Warning: in_array() expects parameter 2 to be array

This case should be handled by the core in two different ways:

1) In Frontend a InvalidTypoScriptConditionException should be thrown (if strictSyntax feature toggle is enabled)
2) In Frontend silent catch this error and log it (if strictSyntax feature toggle is disabled)
3) In Backend silent catch this error and log it, but never break the backend.