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@ 2014-10-15T10:18:52Z

<?php
error_reporting(E_STRICT);

$header = array('test');

if (!empty($header[0]['class'])) {
echo 'set';
} else {
echo 'not set';
}

Output
Performance
VLD
References
Branches

error_reporting: documentation ( source)

preferences:dark modelive preview

44.89 ms | 402 KiB | 5 Q