pass modified parent properties to child class - php

Question

I created a parent class (A) and modified some of its public and protected properties.
I created a child class (B) that extends A.
I can see the parent properties at B instance after creating it.
Problem is: The inherited properties of B have the default values of A, from before I modified them.
I want B to hold the modified values of the inherited properties.
How?
class Dashboard {
protected $testBusinessesIds = '';
public function test_bids($a){
$this->testBusinessesIds = $a;
}
}
class DashboardDBHelper extends Dashboard{
protected $withoutTestBids = '';
public function __construct(){
if($this->testBusinessesIds != '')
$this->withoutTestBids = " AND B.`id`";
}
}
$d = new Dashboard();
$d->test_bids(23);
$dh = new DashboardDBHelper();
print_r($dh->withoutTestBids);
I see: '' instead of 'AND B.id'

Answer 1

You may need to put your property as static. Here's an example:
class A {
protected $value = 1;
protected static $staticValue = 1;
public function printStatic() {
self::$staticValue++;
echo self::$staticValue;
}
public function printNonStatic() {
$this->value++;
echo $this->value;
}
}
class B extends A {
public function printStatic() {
echo self::$staticValue;
}
public function printNonStatic() {
echo $this->value;
}
}
$a = new A();
$b = new B();
/* Class A */
$a->printStatic(); // 2
$a->printNonStatic(); // 2
/* Class B */
$b->printStatic(); // 2
$b->printNonStatic(); // 1
Static variables does not share the same class/object so if you modify the value it will be changed everywhere.