One of the code smells that drive me up the wall is when there's a variable that exists just to pass around a value. For example in the code below we're setting $value to 42 and then returning $value. The $value variable isn't adding anything to this piece of code and it might actually be making it worse if there are several lines between the set and the return because our brains have extra information they need to keep track of.

public function theAnswer(): int
{
    $value = 42;
    return $value;
}

In PhpStorm if I hover over this it will show me that it's an "Unnecessary local variable".

Thankfully, PhpStorm allows us to easily inline the variable by using option (⌥) and the enter key to bring up the contextual actions and quick fixes menu and then select "inline variable" and it will replace anywhere the variable is used with the value it's being set to.

public function theAnswer(): int
{
    return 42;
}

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