What is it for ReflectionAttribute::IS_INSTANCEOF

[rick645]

https://www.php.net/manual/en/reflectionattribute.gettarget.php
Returns the target of the attribute as bitmask

So what?
Some examples?
Cases of use?

[requinix]

The targets are the Attribute::TARGET values.
https://www.php.net/manual/en/language.attributes.classes.php

Since an attribute can be applied to more than one type of thing, getTarget() returns the bitmask of those TARGETs. Then you can use normal bit arithmetic to find out if it applies to a class, or method, or whatever.

[rick645]

On 11/11/2023 at 7:22 PM, requinix said:

The targets are the Attribute::TARGET values.

~$ php -r 'echo Attribute::TARGET;'
PHP Fatal error:  Uncaught Error: Undefined constant Attribute::TARGET in Command line code:1

 

[requinix]

https://www.php.net/manual/en/class.attribute.php

[rick645]

The page talks about Attribute::TARGET_*[1] and not Attribute::TARGET

Anyway, do you know what the constant ReflectionAttribute::IS_INSTANCEOF is for?

$ php -r 'echo ReflectionAttribute::IS_INSTANCEOF . PHP_EOL;'
2

So what?

[1] Expandable in
    Attribute::TARGET_CLASS
    Attribute::TARGET_FUNCTION
    Attribute::TARGET_METHOD
    Attribute::TARGET_PROPERTY
    Attribute::TARGET_CLASS_CONSTANT
    Attribute::TARGET_PARAMETER
    Attribute::TARGET_ALL
    Attribute::IS_REPEATABLE

[requinix]

5 hours ago, rick645 said:

The page talks about Attribute::TARGET_*[1] and not Attribute::TARGET

Yeah.

"The targets are the Attribute::TARGET values."

Plural.

5 hours ago, rick645 said:

Anyway, do you know what the constant ReflectionAttribute::IS_INSTANCEOF is for?

https://www.php.net/manual/en/class.reflectionattribute.php#reflectionattribute.constants.is-instanceof

"Retrieve attributes using an instanceof check."

Do you know how to "retrieve attributes"?

[rick645]

https://www.php.net/manual/en/language.attributes.reflection.php

//...
$attributes = $reflection->getAttributes();
//...

Do you do this, or am I wrong?
This is clear to me !!!
But I don't understand what function performs the constant ReflectionAttribute::IS_INSTANCEOF

 

 

[kicken]

Look at the documentation for getAttributes().  There is a flags parameter which is where you use the IS_INSTANCEOF constant.

Quote

The only other option available, is to use ReflectionAttribute::IS_INSTANCEOF, which will instead use instanceof for filtering.

 

[rick645]

t hanks