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@ 2020-10-30T21:43:47Z

<?php

$arrayObject = new \ArrayObject();
$arrayObject['$ref'] = '/ref';
var_dump(property_exists($arrayObject, '$ref'));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

107.86 ms | 1501 KiB | 5 Q