Nikita Popov 28af364d2a Deprecate old ReflectionParameter type declaration APIs ...

This deprecates:

    ReflectionParameter::isArray()
    ReflectionParameter::isCallable()
    ReflectionParameter::getClass()

These APIs have been superseded by ReflectionParameter::getType()
since PHP 7.0. Types introduced since that time are not available
through the old APIs, and their behavior is getting increasingly
confusing. This is how they interact with PHP 8 union types:

 * isArray() will return true if the type is array or ?array,
   but not any other union type
 * Same for isCallable().
 * getClass() will return a class for T|int etc, as long as the
   union only contains a single type. T1|T2 will return null.

This behavior is not particularly reasonable or useful, and will
get more confusing as new type system extensions are added.

Closes GH-5209.

2020-05-11 17:01:40 +02:00

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