#35874 [NEW]: base_convert is off on numbers greater than 13 decimal places

From: chris at acsi dot ca Operating system: Windows XP Sp2 PHP version: 5.1.1 PHP Bug Type: Math related Bug description: base_convert is off on numbers greater than 13 decimal places Description: ------------ base_convert($str, 10, 16) will not function properly with numbers greater than 13 characters. Reproduce code: --------------- -BEGIN SCRIPT- $string=(string)"Hello Kitty".(string)time(); $hash=md5($string); $hash=strtoupper($hash); // Easier to Read echo("<br>1Hash is '$hash'<br>"); settype($hash, "string"); echo("<br>2Hash is '$hash'<br>"); $hash=base_convert($hash, '16', '10'); // Flick the string from hex to dec echo("<br>3Hash is '$hash'<br>"); $hash=base_convert($hash, '10', '16'); $hash=strtoupper($hash); echo("<br>4Hash is '$hash'<br>"); // Flick the string back $hash=strtoupper($hash); // Easier to read echo("<br>5Hash is '$hash'<br>"); -END SCRIPT- Expected result: ---------------- I can't show the exact expected number, as my MS Calc in hex mode can't handle this number, but it's pretty obvious that all the trailing 0's are wrong. Actual result: -------------- Here is the output text: 1Hash is '9789A9C80C9BFB6B40AD83670F14D64A' 2Hash is '9789A9C80C9BFB6B40AD83670F14D64A' 3Hash is '201428215609899446868600620602402480202' 4Hash is '9789A9C80C9BF8000000000000000000' 5Hash is '9789A9C80C9BF8000000000000000000' -- Edit bug report at http://bugs.php.net/?id=35874&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=35874&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=35874&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=35874&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=35874&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=35874&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=35874&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=35874&r=needscript Try newer version: http://bugs.php.net/fix.php?id=35874&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=35874&r=support Expected behavior: http://bugs.php.net/fix.php?id=35874&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=35874&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=35874&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=35874&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35874&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=35874&r=dst IIS Stability: http://bugs.php.net/fix.php?id=35874&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=35874&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=35874&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=35874&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=35874&r=mysqlcfg