"case": PHPStorm is the method of return $_ GET , which automatically completes the document tag of @ return array | mixed .
"problem": why mixed ? $_ GET is not an array?
is this the Bug, of IDE or the new $_ GET feature of the ship that I never knew about?
for phpstorm, $_ GET is just an ordinary variable, and you should have array operations related to $_ GET in the function, so phpstorm determines that your $_ GET is an array, but is not sure whether there are other forms, so mixed will be added later. Phpstorm will give you a mixed for any data type that cannot be determined.
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want to check I want the network address get to add up for example, the existing network address is region=abc&status=1 when I may enter another web address I want him to add & xxx=1 but will not wash out the previous GET parameters region=ab...