27 июл. 2012 г. · I want to execute some functions if entity is member of few classes but not some. There is a function called instanceof ... But is there something ...

16 янв. 2013 г. · Which is the correct format for negating instanceof? if ( ! $a instanceof stdClass) or if ( ! ($a instanceof stdClass) )

5 сент. 2020 г. · To check if an object does not belong to a class, what is the best way to get the same result as the following NOT valid code?

16 мая 2015 г. · I'm thoroughly confused as to why php's instanceof operator insists that the LVALUE here is not an instance of the defined class when get_class ...

7 окт. 2016 г. · An object is an instanceof a given C if it's: an object of that exact class C; an object of a class which extends the class C, ...

2 мар. 2017 г. · I have an issue with PHP 7's instanceof statement that is only happening on certain conditions. It seems that instanceof works locally on my dev machine.

23 янв. 2016 г. · Your example should return true, I think you are testing an interface from another file and you are missing the use A; in your class C .

2 мая 2017 г. · It makes problem with chaining exceptions where Exception class constructor accepts Throwable in it's last argument. php version: 5.6.23.

6 дек. 2010 г. · Try using PHP's ReflectionClass instead, e.g. $rc = new ReflectionClass($obj); return $rc->implementsInterface($cls);.

30 янв. 2012 г. · You could use the Class.isInstance method: if(!String.class.isInstance(str)) { /* do Something */ } but it is still negated and pretty ugly.