Re: foreach weirdness

On 12-03-24 11:15 AM, Al wrote:

On 3/23/2012 10:11 PM, Robert Cummings wrote:

On 12-03-23 06:30 PM, Simon Schick wrote:

2012/3/23 Robert Cummings<robert@interjinn.com>

On 12-03-23 11:16 AM, Arno Kuhl wrote:

it still does not produce the correct result: 0 1 3 6 10 15 21 0 1 3 6 10 15 15

This looks like a bug... the last row should be the same. What version of PHP are you using? Have you checked the online bug reports?

Hi, Robert Does not seem like a bug to me ... http://schlueters.de/blog/archives/141-References-and-foreach.html What you should do to get the expected result: Unset the variable after you don't need this reference any longer.

Ah yes... that clued me in. I disagree with the article's generalization with respect to references since references accomplish some things that cannot be accomplished otherwise, but even I missed the fact that the second loop was using a variable that was a reference to the last element of the array as created in the first loop *lol*. The user's very act of checking their results was confounding the result... I love it :) Cheers, Rob.

Re, your "...that cannot be accomplished otherwise,..." Can you provide some examples? The only ones I've found are when using create_function() and the arguments for callback functions. I can't even remember or find in my code an example of my foreach()loops needed it. Seems, I recall earlier versions of PHP [<4? ]required references for variables.

After I submitted "...that cannot be accomplished otherwise,...", I realized it was a patently false statement (a turing machine is a turing machine :). The intent of the statement though was to indicate the greater difficulty in achieving something relatively simple with references. See the other thread "Thinking out loud - continuation". My post dated 2012-03-24 00:24 shows a process that is cumbersome and inefficient to implement in another fashion. References are like pointers... very powerful but with cautions for the unwary. Cheers, Rob. -- E-Mail Disclaimer: Information contained in this message and any attached documents is considered confidential and legally protected. This message is intended solely for the addressee(s). Disclosure, copying, and distribution are prohibited unless authorized.