Accessing array element within public function in a php class

Question

Trying to figure out how to work with array elements with a public function inside a PHP class. Have reviewed already similar questions, but without being able to resolve the issue. Below is what I have so far.

class myClass
{
    public $inputNumber = 27;
    public $inputArray = array(1, 2, 4);
    public $outputArray = array($inputArray[0]*$inputNumber, $inputArray[1]*$inputNumber, $inputArray[2]*$inputNumber);

    public function printOutput()
    {
        return "1st value is " . $this->outputArray[0] . "<br>";
        return "2nd value is " . $this->outputArray[1] . "<br>";
        return "3rd value is " . $this->outputArray[2] . "<br>";
    }
}

$obj = new myClass;

echo $obj->printOutput();

You can only return once within a function, so that's not going to work. If you will need to return $this->outputArray, then access the values in the calling element (or simply echo or print instead of return, if this suits) — Chris J
– Chris J, Commented Oct 8, 2017 at 15:10
How about assigning the values in the constructor: function __construct(){ $this->outputArray = array(...);} and remove the 2nd and 3rd return. Concenate the strings and return only once. — Nitin
– Nitin, Commented Oct 8, 2017 at 15:33

Ankur Garg · Accepted Answer · 2017-10-08 17:13:07Z

1

You can also use defined values. other wise good to pass in constructor

<?php

class myClass
{
public $inputNumber = 27;
public $inputArray = array(1, 2, 4);
public $outputArray = array();

function __construct() {
   $this->outputArray= array($this->inputArray[0]*$this->inputNumber, 
                             $this->inputArray[1]*$this->inputNumber, 
                             $this->inputArray[2]*$this->inputNumber
                             );
}
public function printOutput()
{
    $output = "1st value is " . $this->outputArray[0] . "<br>";
    $output .= "2nd value is " . $this->outputArray[1] . "<br>";
    $output .= "3rd value is " . $this->outputArray[2] . "<br>";
    return $output;
 }
}

$obj = new myClass;
echo $obj->printOutput();

here is running snippet: https://ideone.com/miOQJB

answered Oct 8, 2017 at 17:13

Ankur Garg

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1 Comment

newmachines_xyz Over a year ago

Thank you, Ankur. You've provided something I can work with.

Nitin · Accepted Answer · 2017-10-08 15:44:26Z

0

class myClass
{
    public $inputNumber = (int) 27;
    public $inputArray = array();
    public $outputArray = array();

   function __construct($inputNumber = 27, $inputArray = array(1,2,4)) {
       $this->inputNumber = (int) $inputNumber;
       $this->inputArray = (array) $inputArray;
       $this->outputArray= array($this->inputArray[0]*$this->inputNumber, $this->inputArray[1]*$this->inputNumber, $this->inputArray[2]*$this->inputNumber);
    }

    public function printOutput()
    {
        return "1st value is " . $this->outputArray[0] . "<br>"
        . "2nd value is " . $this->outputArray[1] . "<br>"
        . "3rd value is " . $this->outputArray[2] . "<br>";
    }
}

$obj = new myClass;

echo $obj->printOutput();

edited Oct 8, 2017 at 15:44

answered Oct 8, 2017 at 15:39

Nitin

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