Defining and using global variables and global functions, when the convention dictates OOP can be confusing and difficult to use properly for multiple reasons:
Instead of being declared globally, such variables and functions should be moved into a class, potentially marked static, so they can
be used without a class instance.
This rule checks that only object-oriented programming is used and that no functions or procedures are declared outside of a class.
<?php
$name = "Bob"; // Noncompliant
function doSomething($arg) { // Noncompliant
//...
}
class MyClass {
//...
}
<?php
class MyClass {
public static $name = "Bob"; // Compliant
public static function doSomething($arg) { // Compliant
//...
}
//...
}