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@ 2015-01-24T03:57:55Z

<?php

$obj = new ArrayObject(["a" => 1]);
$obj["a"] .= "test";
var_dump($obj["a"]);

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

26.52 ms | 404 KiB | 5 Q