On Sat, March 10, 2007 6:28 am, Dave Goodchild wrote: > Hi guys, I have just read 'Programming PHP' (O'Reilly) and although I > think > it's a great book, I am confused about variable variables and > references - > not the mechanics, just where you would use them. > > The subject of variable variables is explained but no examples are > given as > to why and where you would utilise them. 99% of the time, using variable variables means you screwed up and should have used an array. :-) The 1% remaining is something that should be attempted only by experts, so you'll know when you get there that you need it. > As for references, the examples given with regard to passing and > returning > by reference in functions is clear, but no real examples are given as > to > when this would be a preferred approcah - in fact, the authors stress > that > due to PHP's copy-on-write mechanism, it is not a frequently-used > approcah. In PHP5, the whole reference thing changed all around. What version is the book targetted at, and what version are you running? > So my question - are there any 'classic' situations in which either > should > be used, and where and when do you guys use them in your real-world > efforts? I don't even use OOP in PHP, much less &OOP. I only used variable variables when I was young and foolish. Well, younger and more foolish. -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some starving artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
