OOP PHP：我如何分配变量值？

Question

Not very good at putting this question into words....

I'm using an API to update some customer information

$customer =             new Customer();
$customer->first_name = $value;
$customer->update();

The above would update the first_name, however I'd like to variable where first name is like:

$attribute =                'first_name';    
$customer =                 new Customer();
$customer->$attribute =     $value;
$customer->update();`

Which would then reference the public vars in the Customer class.

I want to avoid writing a method(setter) for every attribute.

Answer 1

Both $obj->$attr and $obj->{$attr} will work in the same way. The {} are redundant in this case. They make sense when you need to write something like $obj->{"123"}.

<?php
$obj = new stdClass();
$attr = 'my_attr';
$obj->$attr = 'test'; 
var_dump($obj);
?>

The problem with your code is that you have a typo. Or if the typo was only in the text of question, then you don't have any problem.