#39764 [NEW]: array_key_exists inconsistent behavior

From: techtonik@php.net Operating system: Windows2000 PHP version: 4.4.4 PHP Bug Type: Scripting Engine problem Bug description: array_key_exists inconsistent behavior Description: ------------ Array indexes can be resources - in this case they are casted to int automatically without any warning (E_STRICT is turned off in PHP5). Hovewer, array_key_exists() throws warning if resource is passed as a key and fails to recognize the key. This leads to confusion and is illustrated below. More logical behavior is to make conversion automatically and display warning only in E_STRICT mode for PHP5. Yes, the problem persists in PHP5 as well. Reproduce code: --------------- <?php $depth = array(); $parser = xml_parser_create(); $depth[$parser] = "xxx"; echo "\n -".array_key_exists((int)$parser, $depth); echo "\n -".array_key_exists("" + $parser, $depth); echo "\n -".array_key_exists("" . $parser, $depth); echo "\n -".array_key_exists((int) $parser, $depth); echo "\n".$depth[$parser]; echo "\n".$depth[(int)$parser]; echo "\n"; $z = "" + $parser; var_dump($z); $z = "" . $parser; var_dump($z); $z = (string) $parser; var_dump($z); $z = strval($parser); var_dump($z); exit(); Expected result: ---------------- Warning: array_key_exists(): The first argument should be either a string or an integer in C:\php51\test00.php on line 8 - -1 - -1 xxx int(4) string(14) "Resource id #4" string(14) "Resource id #4" string(14) "Resource id #4" Actual result: -------------- -1 -1 - -1 xxx int(4) string(14) "Resource id #4" string(14) "Resource id #4" string(14) "Resource id #4" -- Edit bug report at http://bugs.php.net/?id=39764&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=39764&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=39764&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=39764&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=39764&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=39764&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=39764&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=39764&r=needscript Try newer version: http://bugs.php.net/fix.php?id=39764&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=39764&r=support Expected behavior: http://bugs.php.net/fix.php?id=39764&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=39764&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=39764&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=39764&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39764&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=39764&r=dst IIS Stability: http://bugs.php.net/fix.php?id=39764&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=39764&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=39764&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=39764&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=39764&r=mysqlcfg