#43424 [NEW]: array_combine() doesn't truncate float values while using them as keys

From: dharma dot yp at in dot ibm dot com Operating system: Linux, windows PHP version: 5.2CVS-2007-11-27 (snap) PHP Bug Type: Arrays related Bug description: array_combine() doesn't truncate float values while using them as keys Description: ------------ when array with float values is passed to $keys argument of array_combine()function, it creates an array with float keys and the values specified by $values argument. This is in contradiction with the array documentation, which specifies that only integers or strings can be used as keys in an array.Same can be found in the below link. http://in2.php.net/manual/en/language.types.array.php So, either of the below is expected: 1) An error message saying that float values can't be used as keys for an array should be output or 2) float keys should be truncated to integer keys. This behaviour can be found with PHP5.3 and PHP6 as well. Reproduce code: --------------- <?php $arr1 = array(1.1, 2.2); $arr2 = array(1, 2); var_dump( array_combine($arr1, $arr2) ); ?> Expected result: ---------------- array(2) { [1]=> int(1) [2]=> int(2) } Actual result: -------------- array(2) { ["1.1"]=> int(1) ["2.2"]=> int(2) } -- Edit bug report at http://bugs.php.net/?id=43424&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43424&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43424&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43424&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43424&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43424&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43424&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43424&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43424&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43424&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43424&r=support Expected behavior: http://bugs.php.net/fix.php?id=43424&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43424&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43424&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43424&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43424&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43424&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43424&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43424&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43424&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43424&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43424&r=mysqlcfg