ReflectionClass::is*() return value documentation is misleading

[DanielEScherzer]

From manual page: https://php.net/reflectionclass.isinstantiable

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Returns true on success or false on failure.

But false doesn't mean a failure, and true doesn't mean a success - these values indicate if the class is instantiable or not, not whether the check succeeds

Affects

• https://www.php.net/manual/en/reflectionclass.innamespace.php
• https://www.php.net/manual/en/reflectionclass.isabstract.php
• https://www.php.net/manual/en/reflectionclass.isanonymous.php
• https://www.php.net/manual/en/reflectionclass.isfinal.php
• https://www.php.net/manual/en/reflectionclass.isinstance.php
• https://www.php.net/manual/en/reflectionclass.isinstantiable.php
• https://www.php.net/manual/en/reflectionclass.isinterface.php
• https://www.php.net/manual/en/reflectionclass.isinternal.php
• https://www.php.net/manual/en/reflectionclass.isiterable.php
• https://www.php.net/manual/en/reflectionclass.issubclassof.php

For each of these, the documentation should be updated to something along the lines of

Returns true if {condition} or false otherwise.