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@ 2016-11-24T02:43:16Z

<?php

$arr = array(0, '0', NULL, 'abc', '');

foreach($arr as $key) {
    var_dump($key);
    echo ':' . strlen($key);
    echo PHP_EOL . PHP_EOL;
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

25.06 ms | 404 KiB | 5 Q