#30018 [NEW]: multiplication bug (with float values)

From: phpbug at javision dot de Operating system: linux PHP version: 4.3.8 PHP Bug Type: Scripting Engine problem Bug description: multiplication bug (with float values) Description: ------------ sometimes php doesn't multiplicate float values and cuts the position after the decimal point Reproduce code: --------------- //$aRegs[2][0] = 402.83 (regex match from website) echo "<pre>\n"; var_dump($aRegs[2][0]); echo "</pre>\n"; $zahl = $aRegs[2][0]; echo "<pre>\n"; var_dump($zahl); echo "</pre>\n"; $zahl1 = doubleval($zahl); echo "<pre>\n"; var_dump($zahl1); echo "</pre>\n"; $zahl2 = (1.16*$zahl1); echo "<pre>\n"; var_dump($zahl2); echo "</pre>\n"; $zahl3 = (1.10*$zahl2); echo "<pre>\n"; var_dump($zahl3); echo "</pre>\n"; Expected result: ---------------- float(402.83) float(402.83) float(402.83) float(467.2828) float(514.01108) Actual result: -------------- float(402) float(402) float(402) float(402) float(402) -- Edit bug report at http://bugs.php.net/?id=30018&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30018&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30018&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30018&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=30018&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=30018&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=30018&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=30018&r=needscript Try newer version: http://bugs.php.net/fix.php?id=30018&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=30018&r=support Expected behavior: http://bugs.php.net/fix.php?id=30018&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=30018&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=30018&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=30018&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30018&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=30018&r=dst IIS Stability: http://bugs.php.net/fix.php?id=30018&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=30018&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=30018&r=float MySQL Configuration Error: http://bugs.php.net/fix.php?id=30018&r=mysqlcfg