empty array gets other arrays values in my PHP class

Question

class MyTest{

    public $array1;
    public $array2;


    public function __construct()
    {
        $this->$array1 = array();
        $this->$array2 = array();
        echo "Hello, I'm constructor<br/>";
        $this->m1();
    }

    function m1(){

        echo 'inside function';

        for($i=0;$i<10;$i++){
            $this->$array1[] = $i;
        }

        echo '<br/>Array 1<br/>';
        print_r(array_values($this->$array1));

        echo '<br/>Array 2<br/>';
        print_r(array_values($this->$array2));

    }

}

new MyTest;

This is the output:

Can anybody tell me why this happen :-( ?

Since you asked this question, I assume you don't have error reporting enabled in PHP, or you would have seen a bunch of notices that might have helped you figure out what was going on with this. Check into enabling error reporting for your development environment. — Don't Panic
– Don't Panic, Commented Aug 10, 2017 at 23:54

Rob Ruchte · Accepted Answer · 2017-08-10 23:50:34Z

1

Don't put dollar signs on references to your member variables.

$this->$array1
$this->$array2

Should be

$this->array1
$this->array2

answered Aug 10, 2017 at 23:50

Rob Ruchte

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