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@ 2014-07-08T08:30:40Z

<?php

$ref = new ReflectionFunction('gmmktime');
$params = $ref->getParameters();
$param = reset($params);

var_dump($param->isOptional(), $param->isDefaultValueAvailable());
if ($param->isDefaultValueAvailable()) {
    var_dump($param->getDefaultValue());
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
reset: documentation ( source)

preferences:dark modelive preview

37.44 ms | 402 KiB | 5 Q