[PHP] Referencing a Class within another Class

[IntactDev]

Hello DevBest.

I'm here today with a topic that has recently come to my attention. I was once trying to do a revamp of my current framework (by adding a secure backend panel). I ran into a loop of death because of this issue.

Say I have a class called "cat" and a class called "dog".

<?php
class cat {
    function meow() {
        return 'what does the cat say?';
    }
}

class dog {
    function bark() {
        return 'what does the dog say?';
    }
}

new cat = $cat();
new dog = $dog();

class animals {
    function sounds() {
        global cat, dog; #--o here's where the issue starts! o--#
       
        echo $cat->meow() . '<br>' . $dog->bark();
    }
}

?>

With more advanced applications, it becomes one big loop when using the global function... What the the other way of calling a function inside another function?

@Kryptos @RastaLulz @Sledmore @Macemore @WhoeverElseThatsGoodAtPHP

 

[Quackster]

I'm pretty sure you use the price tag when using global function.

 

[IntactDev]

I'm pretty sure you use the price tag when using global function.

Did this on my phone... There are bound to be simple mistakes; and "global" is a function not a variable. Only variables have a price tag.

 

[Quackster]

Did this on my phone... There are bound to be simple mistakes; and "global" is a function not a variable. Only variables have a price tag.

I never said global was a variable...

I said you use the price tag on the variables you reference in the global function.

 

[IntactDev]

I never said global was a variable...

I said you use the price tag on the variables you reference in the global function.

I'm pretty sure you use the price tag when using global function.

I'm not here to have a debate or to argue. I just want an answer. If you don't know, don't fucking reply.

 

[Quackster]

I'm not here to have a debate or to argue. I just want an answer. If you don't know, don't fucking reply.

If you're going to treat everyone like they don't know PHP. Then don't post a fucking thread.

--------

I tested your code, fixed the errors and it works fine.

<?php
class cat {
    function meow() {
        return 'what does the cat say?';
    }
}

class dog {
    function bark() {
        return 'what does the dog say?';
    }
}

$cat = new cat();
$dog = new dog();
$animals = new animals();
$animals->sounds();

class animals {
    function sounds() {
        global $cat, $dog;
       
        echo $cat->meow() . '<br>' . $dog->bark();
    }
}

?>

 

[Ecko]

Did this on my phone... There are bound to be simple mistakes; and "global" is a function not a variable. Only variables have a price tag.

global is not a function.

I'm not here to have a debate or to argue. I just want an answer. If you don't know, don't fucking reply.

he actually gave you the answer

 

[GarettM]

Way OFF TOPIC:
You should try this approach

animals or index.php

<?php

    /**
    *    Animals class
    */
   
    class Animals
    {
        protected $animal;
   
        public function getAnimal($animal)
        {
            if(is_readable("animals/$animal.php"))
            {
                require("animals/$animal.php");
                $this->animal = new $animal();
            }
        }
        public function getInfo()
        {
            if(is_object($this->animal))
            {
                printf(
                    'Animal: %s <br />\n Sound: %s <br />\n Type: %s <br />\n'
                    , $this->animal->getName, $this->animal->getSound(), $this->getType()
                );
            } else {
                return 'No Animal Found.';
            }
        }
    }
?>

Cat

<?php
    /**
    *    Cat
    */
   
    class Cat
    {
        protected $sound, $name, $type;
       
        public function __construct()
        {
            $this->name        = 'Cat';
            $this->type        = 'House Pet';
            $this->sound     = 'Meow';
        }
        public function getSound()
        {
            return $this->sound;
        }
        public function getName()
        {
            return $this->name;
        }
        public function getType()
        {
            return $this->type;
        }
    }
?>

Dog

<?php
    /**
    *    Dog
    */
   
    class Dog
    {
        protected $sound, $name, $type;
       
        public function __construct()
        {
            $this->name        = 'Dog';
            $this->type        = 'House Pet';
            $this->sound     = 'Ruff';
        }
        public function getSound()
        {
            return $this->sound;
        }
        public function getName()
        {
            return $this->name;
        }
        public function getType()
        {
            return $this->type;
        }
    }
?>

This is more Object Orientated i believe not sure
initialize it

<?php

    /**
    *    Initialize
    */
     
    $animals = new Animals;
   
    $animals->getAnimal('Cat');
    $animals->getInfo();
   
    $animals->getAnimal('Dog');
    $animals->getInfo();