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@ 2016-03-15T09:20:08Z

<?php

$var = '';

var_dump(isset($var));
echo PHP_EOL;
var_dump(!empty($var));
echo PHP_EOL;
if($var) {
    echo 'var';
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive preview

58.17 ms | 402 KiB | 5 Q