passing a variable by value using php

Posted by PHP-Prabhu on Stack Overflow See other posts from Stack Overflow or by PHP-Prabhu
Published on 2010-05-11T14:04:22Z Indexed on 2010/05/11 14:14 UTC
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can any one please tell me how to pass a variable as/by value? what i did a mistake on the below code, its shows an parse error

$a = &$$b

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