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@ 2015-05-05T10:30:55Z

<?php
function getVariable() {
  return 'lorem';
}
if ($a = getVariable()) {
  var_dump($a);
}


function getVariable2() {
  return null;
}
if ($a = getVariable2()) {
  var_dump($a);
}

Output
Performance
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References
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var_dump: documentation ( source)

preferences:dark modelive preview

33.93 ms | 402 KiB | 5 Q