This is a new bug that I found.

Memory is leaked when passing string values to String variables in the modular scope of the COM object.

Example:

COM object has public variable called temp which is of String data type.

I instantiate the COM object and reference it with $t_obj.
I pass a string value from php like this:-

$t_obj->temp = "This is a test string.";

PHP has many other bugs concerning passing values through COM, but this bug is more serious because I am only trying to pass String values to the variables directly, without having to call a method to pass the values to the variables.