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How can I get the MAC and the IP address of a connected client in PHP?

I need to know the MAC and the IP address of the connect clients, how can I do this in PHP? 16 Answers ...
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Unable to find valid certification path to requested target - error even after cert imported

... Unfortunately - it could be many things - and lots of app servers and other java 'wrappers' are prone to play with properties and their 'own' take on keychains and what not. So it may be looking at something totally different. Short of truss-ing - I'd try: java -D...
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Why does auto a=1; compile in C?

... old C keyword that means "local scope". auto a is the same as auto int a, and because local scope is the default for a variable declared inside a function, it's also the same as int a in this example. This keyword is actually a leftover from C's predecessor B, where there were no base types: every...
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Showing all errors and warnings [duplicate]

...iguration option will keep this new value during the script's execution , and will be restored at the script's ending . – jave.web Dec 8 '14 at 22:04 ...
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C# difference between == and Equals()

...resolve to System.Object.ReferenceEquals. Equals is just a virtual method and behaves as such, so the overridden version will be used (which, for string type compares the contents). share | improve...
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What it the significance of the Javascript constructor property?

Trying to bend by head around Javascript's take on OO...and, like many others, running into confusion about the constructor property. In particular, the significance of the constructor property, as I can't seem to make it have any effect. E.g.: ...
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What is the difference between a var and val definition in Scala?

What is the difference between a var and val definition in Scala and why does the language need both? Why would you choose a val over a var and vice versa? ...
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Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?

... Tuples are great if you control both creating and using them - you can maintain context, which is essential to understanding them. On a public API, however, they are less effective. The consumer (not you) has to either guess or look up documentation, especially for thin...
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What is the difference between “expose” and “publish” in Docker?

I'm experimenting with Dockerfiles, and I think I understand most of the logic. However, I don't see the difference between "exposing" and "publishing" a port in this context. ...
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How to output only captured groups with sed?

...as well as specifying what you do want. string='This is a sample 123 text and some 987 numbers' echo "$string" | sed -rn 's/[^[:digit:]]*([[:digit:]]+)[^[:digit:]]+([[:digit:]]+)[^[:digit:]]*/\1 \2/p' This says: don't default to printing each line (-n) exclude zero or more non-digits include on...