الـ Properties

<?php
class Student {
    public $school = "PHP Academy";  // قيمة افتراضية
    public $name;
    public $age;
}

class Student {
    public $school = "PHP Academy";
    public $name;
    public $age;

    public function setInfo($name, $age) {
        $this->name = $name;    // تعيين بيانات المثيل
        $this->age = $age;      // تعيين بيانات المثيل
    }
}

$student1 = new Student();
$student2 = new Student();

$student1->setInfo("Alice", 20);
$student2->setInfo("Bob", 22);

echo $student1->name . "\n";          // Alice
echo $student2->name . "\n";          // Bob
echo $student1->school . "\n";        // PHP Academy
echo $student2->school . "\n";        // PHP Academy

Alice
Bob
PHP Academy
PHP Academy