Re: Lexical scoping

2014-01-28 Sebastian Krebs <krebs.seb@gmail.com> > 2014-01-28 Andrea Faulds <ajf@ajf.me> > > > Good morning, > > > > Perhaps a future version of PHP (PHP 6? 5.7?) could have lexical scoping > > with a > > "let" keyword? At the very least, it would make foreach() with a > reference > > less > > of a problem: > > > > foreach ($array as let &$a) { > > $a = 3; > > } > > // $a is not in this scope - no need to worry about accidentally > > changing > > last array item > > > > Any thoughts? > > > > Hi, > > My 2 cents: That is a very minor improvement at the cost of an additional > keyword. It is only to avoid, that you accidentally interfere with outers > scope variables? If it is hard to track these variables, maybe your > method/function is too big. > > I agree. > Regarding your example: > > foreach ($array as &$a) { > $a = 3; > } > $a = null; // $a not a reference anymore. Problem solved :) > > Problem not solved. You have just changed the last element of $array... This is the exact problem that was to be avoided. Lazare INEPOLOGLOU Ingénieur Logiciel > Regards, > Sebastian > > > > -- > > Andrea Faulds > > http://ajf.me/ > > > > -- > > PHP Internals - PHP Runtime Development Mailing List > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > -- > github.com/KingCrunch >