Question

How do I access an attribute of an object by name, if I compute the name at runtime?

For instance. I loop over keys and want to get each value of the attributes "field_" . $key.

In python there is getattribute(myobject, attrname).

It works, of course, with eval("$val=$myobject->".$myattr.";");
but IMO this is ugly – is there a cleaner way to do it?

Answer 1

Keep always in mind that a very powerful feature of PHP is its Variable Variables

You can use

$attr = 'field' . $key;
$myobject->$attr;

or more concisely, using curl brackets

$myobject->{'field_'.$key};