#49202 [NEW]: php array documentation missing information on invalid key return value

From: receive at cprogramming dot ca Operating system: Web server PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: php array documentation missing information on invalid key return value Description: ------------ http://uk2.php.net/manual/de/language.types.array.php There's no explanation in the online documentation of what value is returned when you access an array with a key/index that doesn't exist. For example, on line 3, I cannot use the documentation to tell me what $a["testing_invalid_index"] will return to me. Does it return 0 or "" or null or false, or does it give an error? 1) $a[] = array(); 2) $a["sdfads"] = "booger"; 3) if ($a["testing_invalid_index"] == false){ 4) echo "Something"; 5) } Reproduce code: --------------- --- From manual page: language.types.array --- Expected result: ---------------- Documentation should indicate how an expression containing an array with an invalid key/index is evaluated. Actual result: -------------- Documentation is missing information on how an expression containing an array with an invalid key/index is evaluated. -- Edit bug report at http://bugs.php.net/?id=49202&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49202&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49202&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49202&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49202&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49202&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49202&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49202&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49202&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49202&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49202&r=support Expected behavior: http://bugs.php.net/fix.php?id=49202&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49202&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49202&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49202&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49202&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49202&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49202&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49202&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49202&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49202&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49202&r=mysqlcfg