#40187 [Bgs]: mt_rand(), rand()
ID: 40187 User updated by: callawey at gmail dot com Reported By: callawey at gmail dot com Status: Bogus Bug Type: Math related Operating System: windows xp PHP Version: 5.2.0 New Comment: while($row = $DB->fetchArray($result)) { $str = ""; for($i=0;$i<=12;$i++) { $str .= rand(0,9); } $sqlc = sprintf("UPDATE %s SET user_id='%s' WHERE id='%s'", $DB->prefix("users"), $str, $row["id"]); $DB->queryF($sqlc); } this returns same number everytime even i use $str = ""; in every loop Why ? Previous Comments: ---------------- [2007-01-21 19:12:02] callawey at gmail dot com while($row = $DB->fetchArray($result)) { for($i=0;$i<=12;$i++) { $str .= rand(0,9); } //$str = mt_rand(1000, ); $sqlc = sprintf("UPDATE %s SET user_id='%s' WHERE id='%s'", $DB->prefix("users"), $str, $row["id"]); $DB->queryF($sqlc); } this code makes all colums -1 [2007-01-21 19:10:58] [EMAIL PROTECTED] Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Integer overflow on 32 bit systems is the cause. [2007-01-21 19:06:47] callawey at gmail dot com Description: rand and mt_rand generates random lenght integer between -99 and +99. example mt_rand(1000, ); outputs: -564, -688852, 558988, -68889558 Reproduce code: --- $str = mt_rand(1000, ); Expected result: positive numbers between 1000 and Actual result: -- -492911349,1162038978,-219333642 -- Edit this bug report at http://bugs.php.net/?id=40187&edit=1
#40187 [Bgs]: mt_rand(), rand()
ID: 40187 User updated by: callawey at gmail dot com Reported By: callawey at gmail dot com Status: Bogus Bug Type: Math related Operating System: windows xp PHP Version: 5.2.0 New Comment: while($row = $DB->fetchArray($result)) { for($i=0;$i<=12;$i++) { $str .= rand(0,9); } //$str = mt_rand(1000, ); $sqlc = sprintf("UPDATE %s SET user_id='%s' WHERE id='%s'", $DB->prefix("users"), $str, $row["id"]); $DB->queryF($sqlc); } this code makes all colums -1 Previous Comments: [2007-01-21 19:10:58] [EMAIL PROTECTED] Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Integer overflow on 32 bit systems is the cause. ---------------- [2007-01-21 19:06:47] callawey at gmail dot com Description: rand and mt_rand generates random lenght integer between -99 and +99. example mt_rand(1000, ); outputs: -564, -688852, 558988, -68889558 Reproduce code: --- $str = mt_rand(1000, ); Expected result: positive numbers between 1000 and Actual result: -- -492911349,1162038978,-219333642 -- Edit this bug report at http://bugs.php.net/?id=40187&edit=1
#40187 [NEW]: mt_rand(), rand()
From: callawey at gmail dot com Operating system: windows xp PHP version: 5.2.0 PHP Bug Type: Math related Bug description: mt_rand(), rand() Description: rand and mt_rand generates random lenght integer between -99 and +99. example mt_rand(1000, ); outputs: -564, -688852, 558988, -68889558 Reproduce code: --- $str = mt_rand(1000, ); Expected result: positive numbers between 1000 and Actual result: -- -492911349,1162038978,-219333642 -- Edit bug report at http://bugs.php.net/?id=40187&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40187&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40187&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40187&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40187&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40187&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40187&r=needtrace Need Reproduce Script:http://bugs.php.net/fix.php?id=40187&r=needscript Try newer version:http://bugs.php.net/fix.php?id=40187&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40187&r=support Expected behavior:http://bugs.php.net/fix.php?id=40187&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40187&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40187&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40187&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40187&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40187&r=dst IIS Stability:http://bugs.php.net/fix.php?id=40187&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40187&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40187&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40187&r=nozend MySQL Configuration Error:http://bugs.php.net/fix.php?id=40187&r=mysqlcfg