PHP - Adding a value to a variable inside a class

Question

I am trying to add a value to a public variable inside a class using a function. I am unsure how to do so. My current PHP code is as follows:

class Truck {
public $Odometer = 0;
public $Model = 'Triton';
public $Price;
public $Horsepower;

public function __construct() {
  $this->Price = 30;
}
public function __construct() {
  $this->Horsepower = 205;
}
public function ShowOdometer() {
  echo "Odometer: ".$this->Odometer;
}
public function ShowModel() {
  echo "Model: ".$this->Model;
}
public function ShowPrice() {
  echo "Cost: ".$this->Price;
}
public function ShowHorsepower() {
  echo "Horsepower: ".$this->Horsepower
}
}

am attempting to add an integer value to $Price and $Horsepower through a method. I have attempted to use __construct() although this gives me a Fatal error: Cannot redeclare Truck::__construct().

as error say Cannot redeclare Truck::__construct(). a class has single construct() function. — urfusion
– urfusion, Commented Mar 4, 2016 at 10:03
You just can't have the constructor twice, otherwise everything is ok. (Also a variable in a class is called a property; And a function a method) — Rizier123
– Rizier123, Commented Mar 4, 2016 at 10:03

Sougata Bose · Accepted Answer · 2016-03-04 10:03:56Z

2

You are defining two constructor inside the class, thus the error - Fatal error: Cannot redeclare Truck::__construct(). Try -

class Truck {
public $Odometer = 0;
public $Model = 'Triton';
public $Price;
public $Horsepower;

public function __construct() {
  $this->Price = 30;
  $this->Horsepower = 205;
}
public function ShowOdometer() {
  echo "Odometer: ".$this->Odometer;
}
public function ShowModel() {
  echo "Model: ".$this->Model;
}
public function ShowPrice() {
  echo "Cost: ".$this->Price;
}
public function ShowHorsepower() {
  echo "Horsepower: ".$this->Horsepower
}
}

answered Mar 4, 2016 at 10:03

Sougata Bose

31.8k8 gold badges52 silver badges89 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

izk Over a year ago

You are right about the constructor, but its also possible(if he needs more then 1 constructor) to just name the 2nd 1 different? like constructor2?

Joshua Hateley Over a year ago

Thank you for your answer; and all the others that commented above. This has solved this particular issue! What must I do to make sure that the function of __construct() runs and updates the values so I can use ShowHorsePower?

Sougata Bose Over a year ago

@baboizk. Then that will be member function of that class. Which is normal. But you can't have two constructor for same class.

izk Over a year ago

@Sougata I have to read into that then, thank you. not familiar with what that means. I've been using an API class at the moment and it then has alot of "member functions".

Sougata Bose Over a year ago

I would suggest you to go through OOP concepts.

Collectives™ on Stack Overflow

PHP - Adding a value to a variable inside a class

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related