Doc #55069 [Opn->Bgs]: slice_array() does not always reset()?

Edit report at https://bugs.php.net/bug.php?id=55069&edit=1 ID: 55069 Updated by: frozenfire@php.net Reported by: ross dot crowley at affirmativedesign dot com Summary: slice_array() does not always reset()? -Status: Open +Status: Bogus Type: Documentation Problem Package: *General Issues Operating System: Mac OS X 10.6.7 PHP Version: 5.3.6 Block user comment: N Private report: N New Comment: It seems that you're adding arrays together with the addition operator (+). This is not how array concatenation works in PHP. You need to use array_merge to merge two arrays into one. Addition of two arrays with the addition operator seems to simply return the first array. Previous Comments: ------------------------------------------------------------------------ [2011-06-29 13:20:29] ross dot crowley at affirmativedesign dot com Description: ------------ --- From manual page: http://www.php.net/function.array-slice%23Description --- array_slice() should reset() the array pointer; however, I've observed the following: // MySQL formatted date $string = '2011-06-30 02:49:24'; // Regex to convert date to parts, with time optional preg_match('/^(\d{4})-(\d{2})-(\d{2})( (\d{2}):(\d{2}):(\d{2})\.?\d?)?$/', $string, $parts); $output = array_slice($parts, 0, 4) + array_slice($parts, 5); print_r($output); Basically, this was just a quick, dirty way to get date/time values into parts, but ignore the match of just the time ($parts[4]). I expected to get: Array ( [0] => 2011-06-30 02:49:24 [1] => 2011 [2] => 06 [3] => 30 [4] => 02 [5] => 49 [6] => 24 ) But I always got: Array ( [0] => 2011-06-29 21:49:24 [1] => 2011 [2] => 06 [3] => 29 ) However, this does produce the expected result: $array = array_slice($parts, 0, 4) + array_slice($parts, 1); print_r($array); Note that the second slice starts the slice at index 1 and not 5 as I'd expect if index() had been reset by first call to array_slice. Apparently, the reset() is called only after completion of the full statement and not by the function itself? Not sure if this is a bug or an undocumented feature. My example is a bit silly, I know, as I should have array_spliced() in this case, but the output Test script: --------------- // MySQL formatted date $string = '2011-06-30 02:49:24'; // Regex to convert date to parts, with time optional preg_match('/^(\d{4})-(\d{2})-(\d{2})( (\d{2}):(\d{2}):(\d{2})\.?\d?)?$/', $string, $parts); $output = array_slice($parts, 0, 4) + array_slice($parts, 5); print_r($output); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=55069&edit=1