Re: Strange string stuff -- maybe everything is ending...

On Fri, Dec 21, 2012 at 4:10 PM, Nathan Nobbe <quickshiftin@gmail.com>wrote: > > > On Fri, Dec 21, 2012 at 3:27 PM, Jim Giner <jim.giner@albanyhandball.com>wrote: > >> On 12/21/2012 5:16 PM, Tedd Sperling wrote: >> >>> On Dec 21, 2012, at 4:58 PM, Jim Giner <jim.giner@albanyhandball.com> >>> wrote: >>> >>>> >>>>> Never realized that you could address a string as an array of chars, >>>> which you are doing. Could that be the issue? Or did I learn something >>>> new? Or should you have used substr to remove that last char? >>>> >>> >>> Jim: >>> >>> I guess you learned something new -- that's good. >>> >>> A string is just a "string" of chars. >>> >>> As such, if you define: >>> >>> $a = "tedd"; >>> >>> then: >>> >>> $a[0] is 't'; >>> $a[1] is 'e' >>> $a[2] is 'd' >>> $a[3] is 'd' >>> >>> The only confusing thing here is the length of the string -- in this >>> case the length of this string is four, but $a[4] has not been defined. >>> >>> Cheers, >>> >>> tedd >>> >>> _____________________ >>> tedd@sperling.com >>> http://sperling.com >>> >>> >>> >>> From what I do know, there shouldn't be an a[4]. >> In any case, let's assume that there is a bug in the string logic that >> you're using. Why not just use substr? >> >> $topic = substr($topic,0,-1); >> >> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > Neat idea Tedd, but judging by a quick test, I don't think changing the > value of the string is entirely supported though that notation. > > php > $str = 'blah'; > php > $str[3] = ''; > php > echo $str . PHP_EOL; > bla > php > echo strlen($str); > 4 > > Another interesting twist along the same lines, seems the string offsets are indeed read only: php > unset($str[3]); Fatal error: Cannot unset string offsets in php shell code on line 1 Call Stack: 6665.6475 384568 1. {main}() php shell code:0 -nathan