From: ben at umingo dot de Operating system: Windows XP 32Bit PHP version: 5.2.6 PHP Bug Type: Output Control Bug description: Sign-Bit Manipulating is buggy
Description: ------------ Problem is with sign bit. If i have 0x81234567 then first bit is set to 1 (sign bit). I would expect that number to be negative, as all integers are signed 32 bit integers. If i echo that number, it is positive! If i compute something with this number, it turns negative! I have a standard PHP 5.2.6 Version and did not modify anything at it. Reproduce code: --------------- <? //sign bit is not handled correctly //a | a is expected to be a ... //WORKS NOT echo "with sign bit <br>"; echo (0x81234567 | 0x81234567); //result is negative echo "<br>"; echo (0x81234567 );//result is positive echo "<br>without sign bit <br>"; //WORKS echo (0x71234567 | 0x71234567); echo "<br>"; echo (0x71234567 ); ?> Expected result: ---------------- with sign bit -2128394905 -2128394905 without sign bit 1898136935 1898136935 Actual result: -------------- with sign bit -2128394905 2166572391 without sign bit 1898136935 1898136935 -- Edit bug report at http://bugs.php.net/?id=45953&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45953&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45953&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45953&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=45953&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=45953&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=45953&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=45953&r=needscript Try newer version: http://bugs.php.net/fix.php?id=45953&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=45953&r=support Expected behavior: http://bugs.php.net/fix.php?id=45953&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=45953&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=45953&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=45953&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45953&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=45953&r=dst IIS Stability: http://bugs.php.net/fix.php?id=45953&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=45953&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=45953&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=45953&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=45953&r=mysqlcfg
