parameter.this

Code example

<?php declare(strict_types = 1);

function doFoo($this)
{
}

Why is it reported?

$this is a reserved variable in PHP that refers to the current object instance inside a class. Using it as a parameter name is not allowed — PHP will produce a fatal error if $this is used as a parameter in a method, and while it may not always error in a standalone function, it creates misleading code that suggests an object context where there is none.

How to fix it

Rename the parameter:

-function doFoo($this)
+function doFoo($value)
 {
 }