Doc #70594 [NEW]: behviour of unset inside foreach is undocumented

From: lucas at threeam dot com dot au Operating system: PHP version: Irrelevant Package: Documentation problem Bug Type: Documentation Problem Bug description:behviour of unset inside foreach is undocumented Description: ------------ --- From manual page: http://www.php.net/function.unset --- Does not explicitly mention whether a construct like // Now delete every item, but leave the array itself intact: foreach ($array as $i => $value) { unset($array[$i]); } is safe, even though it's implied since that example comes from a (non-user-contributed) note in http://www.php.net/language.types.array You should probably also mention that this does not hold for 'for' loops unless the size of array is captured first. e.g. this is bad: for ($i = 0; $i < count($a); $i++) { if (!sometest($a[$i])) { unset($a[$i]); } } but this is okay: for ($i = 0, $n = count($a); $i < $n; $i++) { if (!sometest($a[$i])) { unset($a[$i]); } } -- Edit bug report at https://bugs.php.net/bug.php?id=70594&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70594&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70594&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70594&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70594&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70594&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70594&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70594&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70594&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70594&r=support Expected behavior: https://bugs.php.net/fix.php?id=70594&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70594&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70594&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70594&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70594&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70594&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70594&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70594&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70594&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70594&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70594&r=mysqlcfg