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re: All the changes that come with PHP 7.4 VIEW POST

FULL DISCUSSION
 

Thanks for the article Carlos.
I‘m currently learning PHP and something intrigued me, why did you write
if(!($command instanceOf RegisterUserCommand)){} as if it would be the same as passing RegisterUserCommand as a parameter? Doesn‘t the exclamation inside the if statement mean „only if $command is not an instance of RegisterUserCommand“?

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