Php dynamic variable names

Question

I have a variable which holds an assoc array:

$arr = [
    'key' => [
        'sub' => 'Hello'
    ]
];

I have also another varibale which is a string matching the sub key:

$str = (string) '["key"]["sub"]';

How can I make $arr var to echo the sub key in the $str variable dynamicaly? Maybe in this direction.

echo $arr . ${$str};

Thanks in advance.

here is an example thegeekyland.blogspot.com/2015/11/php-dynamic-variables.html — Arlind Hajredinaj
– Arlind Hajredinaj, Commented Dec 2, 2015 at 19:13

AbraCadaver · Accepted Answer · 2015-01-16 22:00:44Z

1

Don't do this. If you have a specific requirement and you think this is the way then please ask a more general question that does not presuppose this method. But since you're just curious:

eval('echo $arr'.$str.';');

answered Jan 16, 2015 at 22:00

AbraCadaver

79.2k7 gold badges75 silver badges91 bronze badges

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

Collectives™ on Stack Overflow

Php dynamic variable names

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related