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Yeah, documentation is for pussies.
Here is one PHP core developer claiming that PHP documentation is wrong, even on fundamental things... http://www.reddit.com/r/lolphp/comments/2md8c0/new_safe_cast... Just saying....
That's right... they consider certain tests failing OK, a certain number of failures OK, tests failing nondeterministically OK.
Just saying... Who gives a shit about programmer headaches? ;)