This is a basic introduction on how to use OOP – Object-Oriented Programming in PHP, as requested by a friend.
Declaring a Class
class myClass {
// Class contents go here
}Instantiating an Object
$myClassInst = new myClass();OOP Class Inheritance
class a {
function test() {
echo "a::test called";
}
function func() {
echo "a::func called";
}
}
class b extends a {
function test() {
echo "b::test called";
}
}
class c extends b {
function test() {
parent::test();
}
}
class d extends c {
function test() {
b::test();
}
}
$a = new a();
$b = new b();
$c = new c();
$d = new d();
$a->test(); // Outputs "a::test called"
$b->test(); // Outputs "b::test called"
$b->func(); // Outputs "a::func called"
$c->test(); // Outputs "b::test called"
$d->test(); // Outputs "b::test called"
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