#45319 [NEW]: Array's don't convert as per documentation

From: peillert at xs4all dot nl Operating system: Linux PHP version: 5.2.6 PHP Bug Type: Variables related Bug description: Array's don't convert as per documentation Description: ------------ Array's don't convert as the documentation says and emit's an E_WARNING upon conversion. the documentation says that when converting an scalar value to an array the result will be an array with 1 element, the original scalar value. however the scalar value is never converted and an E_WARNING is emitted instead. see code below. a quote from the documentation: "For any of the types: integer, float, string, boolean and resource, converting a value to an array results in an array with a single element with index zero and the value of the scalar which was converted. In other words, (array)$scalarValue is exactly the same as array($scalarValue)." more interesting is that also the '(array)$scalarValue' does not work but if the scalar evaluates to NULL such as false or an empty string it does work. as in the test code i including below only test 2 works as expected. test 1 emits an E_WARNING and test 3 fails silently. now either the documentation is out-of-date but i cannot imagine that this is the intended behaviour. especially test 3 is troublesome as an explicit cast of any kind should not fail silently. Reproduce code: --------------- <?php error_reporting(E_ALL); print("\n Test 1.\n"); $scalar = true; var_dump($scalar); $scalar[] = "A new element to the array"; var_dump($scalar); print("\n Test 2. \n"); $scalar = false; var_dump($scalar); $scalar[] = "A new element to the array"; var_dump($scalar); print("\n Test 3. \n"); $scalar = true; var_dump($scalar); (array)$scalar; var_dump($scalar); ?> Expected result: ---------------- //test 1. bool(true); array(1) { [0] => bool(true); [1] => string(26) "A new element to the array"; } //for test 2. bool(false); array(1) { [0] => string(26) "A new element to the array"; } //for test3. (bool)true; array(1) { [0] => bool(true); } Actual result: -------------- Test 1. bool(true) Warning: Cannot use a scalar value as an array in array_bug.php on line 6 bool(true) Test 2. bool(false) array(1) { [0]=> string(26) "A new element to the array" } Test 3. bool(true) bool(true) -- Edit bug report at http://bugs.php.net/?id=45319&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45319&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45319&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45319&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=45319&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=45319&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=45319&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=45319&r=needscript Try newer version: http://bugs.php.net/fix.php?id=45319&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=45319&r=support Expected behavior: http://bugs.php.net/fix.php?id=45319&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=45319&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=45319&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=45319&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45319&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=45319&r=dst IIS Stability: http://bugs.php.net/fix.php?id=45319&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=45319&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=45319&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=45319&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=45319&r=mysqlcfg