php - How do I make a class variable automatically available to its children classes? -

i have application class , have number of separate classes extend it. if set $variable in parent application class, how make automatically available in children?

class application {     public $variable;      public function __construct() {         $this->variable = "something";     } }  class child extends application {   public function dosomthing() {     $mything = $variable." cool";     return $mything;   } } 

i know can put global $variable; in dosomthing() method, super tedious on , on in every method write. there way available child class methods? thanks.

you set property named variable in application class in __construct method.

if property visibility permits (e.g. public or protected), can access property potato in children classes method $this->potato:

class application {     public $variable;      public function __construct() {         $this->variable = "something";     } }  class child extends application {   public function dosomthing() {     $mything = $this->variable." cool";     return $mything;   } }