Fatal error while extending an included class
I'm trying very simple here but it doesn't seem to work. Take a look at this code:
include 'custom/mainclass.php';
$child = new childClass();
class childClass extends mainClass {
}
Apparently childClass () cannot be found (according to php). I am 100% sure that I am doing something very stupid in order to streamline my code.
I have already searched the internet, but from what I understand, I am not doing anything wrong.
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2 answers
You must declare your classes in your code first before using them.
include 'custom/mainclass.php';
class childClass extends mainClass {
}
$child = new childClass(); //Create an instance after the class has been declared
EDIT:
After some research, it turned out that you can actually use a class before declaring it. But the declaration of the class and all parent classes must be in one file.
So, if you declare a parent class in one file and a child class in another, it won't work.
Also, you must first declare parent classes. After that, you can expand them.
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