Access static object property through variable name

Question

I know its possible to access an object property/method using a variable as its name

ex.:

$propName = 'something';
$something = $object->$propName;

Is it possible to do the same w/ constants or static properties?

I've tried:

$constName = 'MY_CONST';

MyCLass::{$constName};

and

$obj::{$constName};

But nothing seems to work and I couldn't find it anywhere.

Community · Accepted Answer · 2023-11-17 19:32:19Z

10

Use: Class::$$constName, this is similar to normal variable variables.

Demo:

<?php    
class MyClass {
    public static $var = 'A';
}
$name = 'var';
echo MyClass::$$name; // echoes 'A'

Constants can be access with the constant function:

constant('MyClass::'.$constantName)

edited Nov 17, 2023 at 19:32

CommunityBot

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answered Mar 19, 2014 at 2:38

TimWolla

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Comments

Gonzalo Bahamondez · Accepted Answer · 2014-03-19 02:45:48Z

2

This works for me:

<?php
class Test {
  public static $nombre = "pepe";

  public function __construct() {
    return self;
  }
}

$varName = "nombre";
echo Test::${$varName};

answered Mar 19, 2014 at 2:45

Gonzalo Bahamondez

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Comments

David Lin · Accepted Answer · 2014-03-19 02:37:40Z

1

You can use the constant function:

constant('bar::'. $const);
constant("$obj::". $const); //note the double quote

answered Mar 19, 2014 at 2:37

David Lin

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1 Comment

CarlosCarucce Over a year ago

your 1st example worked, but i've tried the second way and it sent the error: "Object of class tst could not be converted to string", even with the double quoted string. thanks for your answer anyway

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