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Showing results for tags 'object orientated programming'.
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Hi everyone, I am starting to learn PHP OOP and would like to know if you could help me understanding the scopes a little bit better. I have created the below code during my courses, but cannot work out how to reuse $this->total in another class. I have set the $total; to protected and was wishing to be able to use it in my second class but it returned an error. Any idea how I could use this variable in another class while set with the scope of Protected please? Thank you so much! Class Calculator{ public $number1; public $number2; protected $total; function setNumber1($int){ $this->number1 = (int) $int; } function setNumber2($int){ $this->number2 = (int) $int; } function Calculate(){ $this->total = $this->number1 + $this->number2; } function getResult(){ return $this->total; } } $Calculator = new Calculator(); $Calculator->setNumber1(5); $Calculator->setNumber2(10); $Calculator->Calculate(); echo $Calculator->getResult() . "<br>"; Class secondCalculator extends Calculator { $this->total = $this->number3 + $this->number4; } Ben
