How do I use a function that I defined in a parent class in the child class?
for example if i use a class like the below
<?php
class mat
{
function square($x)
{
return $x *$x;
}
}
class matchild extends mat
{
function doublesquare($x)
{
return square($x) * square($x)
}
}
?>
If I try the above , I get an error saying that the square function is not defined.
Answers and suggestions appreciated.
You need to use this
return $this->square(x) * $this->square(x);
Check out PHP's basic documentation on classes and objects.
Couple of issues with your snippet. But the answer you're looking for is:
$this->square()
parent::square(x) * parent::square(x)
In matchild's contructor call parent::__construct()
class matchild extends mat
{
function __construct()
{
parent::__construct();
}
}
Then you can call any method contained within the parent with $this->
