Re: [PHP4BETA] select() Design Notes

-- Evan Klinger <evan715@sirius.com> wrote: > As I have it now, it works like Thies' original posting > (select($timeout,$rfd[,$wfd][,$efd]) where $?fd can be an array of fd > resources or a single fd resource). Since I see no easy way for > select() to return whether each passed $?fd is set, fd_isset() can be > used to check the status of a $?fd. > > How this works: > select() extracts each fd in $?fd if it is an array. Each of these > fd's is then FD_SET() into their appropriate fd_set (read, write, > except). Because fd_isset() needs access to the fd_set and we don't > want globals, select() registers the fd_sets with a key so that it is > constant and can be fetched in fd_isset(). > fd_isset($fd,"read"|"write"|"except") is passed the $fd that you > want > to check and a string identifying the set. The string is needed > because the passed $fd could be in more than one set. This seems ideal to me, from the PHP side of things. If it works without globals and other such Bad Things, I say go with it. One question though: will select mind if the array indicies are not integers? I'd like to do something like this (as soon as we upgrade to PHP4): <?php $rfd["php"] = fsockopen("www.php.net",80); $rfd["slashdot"] = fsockopen("www.slashdot.org",80); select(1000000,$rfd); while ( list($site,$fd) = each($rfd) ) if ( fd_isset($fd,"read") ) do_stuff($site); ?> Another thought: would it speed things up significantly to use constants in place of strings in fd_isset()? eg. fd_isset($rfd, FD_READ); Thanks, BTW. I've been wanting a select() call for a while.... Colin -------------------------------------------- Colin Putney 604-932-0606 x21 Bit Flinger colin@whistler.net Whistler Networks http://www.whistler.net/