TYPO3 Core

ReflectionService::convertParameterReflectionToArray() builds an array like so:

$parameterInformation = array(
            'position' => $parameterPosition,
            'byReference' => $parameter->isPassedByReference() ? TRUE : FALSE,
            'array' => $parameter->isArray() ? TRUE : FALSE,
            'optional' => $parameter->isOptional() ? TRUE : FALSE,
            'allowsNull' => $parameter->allowsNull() ? TRUE : FALSE
        );

The functions all return Boolean values and do not need to be tested for boaleanness again:

$parameterInformation = array(
            'position' => $parameterPosition,
            'byReference' => $parameter->isPassedByReference(),
            'array' => $parameter->isArray(),
            'optional' => $parameter->isOptional(),
            'allowsNull' => $parameter->allowsNull()
        );