Are there any alternative methods for accessing variables between classes in PHP besides using functions?

To access variables between classes in PHP without using functions, you can utilize the concept of inheritance. By extending a class, you can access its properties directly in the child class. This allows you to share variables across classes without the need for explicit getter or setter methods. 

class ParentClass {
    protected $sharedVariable = 'Hello from ParentClass';
}

class ChildClass extends ParentClass {
    public function displaySharedVariable() {
        echo $this->sharedVariable;
    }
}

$child = new ChildClass();
$child->displaySharedVariable(); // Output: Hello from ParentClass

Keywords

PHP classes variables access methods

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