Is there a is_defined / is_set($var / $arr[‘key’] / $arr[‘key’][‘sub_key’] ) that returns TRUE if the variable is defined, NULL or not, that will not throw exceptions/errors if the array key is not set? Do they have an RFC for this?

So I am fairly new to using Wireshark and cannot figure out how to capture all the traffic on my network. The […]

which Xcode version that should I download for Mac high sierra 10.13.6 , note that I downloaded xcode 10.2 but it inform […]