In the context of PHP development, what are some potential pitfalls to avoid when working with objects and object properties to prevent errors like "Fatal error: Using $this when not in object context"?

When working with objects in PHP, it's important to remember that the use of $this should only be within the context of a class method. Trying to access object properties or methods using $this outside of a class method will result in the "Fatal error: Using $this when not in object context" error. To avoid this error, always make sure that $this is used within a class method.

class MyClass {
    private $property;

    public function setProperty($value) {
        $this->property = $value;
    }

    public function getProperty() {
        return $this->property;
    }
}

$obj = new MyClass();
$obj->setProperty("Hello");
echo $obj->getProperty();