From: phpbugs at steve dot ipapp dot com Operating system: ANY PHP version: 5.2.5 PHP Bug Type: SimpleXML related Bug description: Broken Compatibility
Description: ------------ In PHP 5.0.x and 5.1.x two SimpleXMLElement objects were considered equal if they represented the same data. In PHP 5.2.x this does not seem to be the case anymore. This was previously listed as bug 39866 [http://bugs.php.net/bug.php?id=39866], but for some reason this was listed as bogus. In that bug it was noted that we should look at Example 5 at http://php.net/simplexml. I'm assuming this is Example 6 now [Comparing Elements and Attributes with Text] , but this is incorrect as comparision will implicity cast it to string anyway. According to http://www.php.net/manual/en/language.oop5.object-comparison.php: "When using the comparison operator (==), object variables are compared in a simple manner, namely: Two object instances are equal if they have the same attributes and values, and are instances of the same class... On the other hand, when using the identity operator (===), object variables are identical if and only if they refer to the same instance of the same class." Furthermore this backwards incompatible change is not listed in : http://us.php.net/manual/en/migration52.incompatible.php. Currently there is no equals method that we can call to get the previous functionality back, and at the present moment this makes == no longer transitive as especially since this makes == no longer transitive as 'doc' == x1, 'doc' == x2, but x1 != x2. I do not understand why ==, nor do I see value in, doing a strict comparison for SimpleXMLObjects as ==, when according to the PHP Object Comparison manual this should be ===. Therefore I believe this is a bug. Reproduce code: --------------- $xmldoc = "<xml><value>foo</value></xml>"; $sax1 = new SimpleXMLElement("$xmldoc"); $sax2 = new SimpleXMLElement("$xmldoc"); if($sax1 == $sax2) { echo "TRUE"; } else { echo "FALSE"; } echo "\n\n\n"; Expected result: ---------------- TRUE Actual result: -------------- FALSE -- Edit bug report at http://bugs.php.net/?id=44411&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=44411&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=44411&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=44411&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=44411&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=44411&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=44411&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=44411&r=needscript Try newer version: http://bugs.php.net/fix.php?id=44411&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=44411&r=support Expected behavior: http://bugs.php.net/fix.php?id=44411&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=44411&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=44411&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=44411&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44411&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=44411&r=dst IIS Stability: http://bugs.php.net/fix.php?id=44411&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=44411&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=44411&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=44411&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=44411&r=mysqlcfg
