The concatenation of a property does not work.

Question

$model_data - a class that contains 4 properties: code1, .., code4
This code causes an error. Не определено свойство "MyClass.code" :

 for($i = 0; $i++ < 4;){ echo $model_data->code.$i; }

You can of course rewrite this way:

 for($i = 0; $i++ < 4;){ <? $code='code'.$i?> <? echo $model_data->$code; ?> }

But still wondering why in the 1st version does not work concatenation?

in the first you call the property first, then you glue it, in the second, at first you glue it, then you call it.

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