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@ 2017-07-12T10:11:55Z

<?php

function bla(callable $c) {
    echo json_encode($c);
}

bla(function($a) {
    echo "hi";
});

Output
Performance
VLD
References
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json_encode: documentation ( source)

preferences:dark modelive preview

40.96 ms | 402 KiB | 5 Q