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@ 2013-10-09T16:26:31Z

<?php
$variableName = 'location';
${$variableName}->city = 'Chicago';

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

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

38.83 ms | 402 KiB | 5 Q