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@ 2014-09-23T19:32:50Z

<?php

$arr = [];
$arr[] = &$arr;

var_dump(json_encode($arr));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
json_encode: documentation ( source)

preferences:dark modelive preview

34.89 ms | 402 KiB | 5 Q