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@ 2013-10-09T16:15:58Z

<?php
$location = new stdClass;
//$location->city = "Chicago";

$variableName = 'location->city';
${$variableName} = 'Chicago';
var_dump(${$variableName});

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

49.67 ms | 402 KiB | 5 Q