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@ 2015-11-06T12:13:04Z

<?php

$val = [
];

$ternary = $val['exists'] ?: 'no-tern';
$nullCo = $val['exists'] ?? 'no-null';

var_dump($ternary, $nullCo);

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

58.15 ms | 402 KiB | 5 Q