From: cdturri at hotmail dot com Operating system: Windows 2000 Advanced Server SP4 PHP version: 5.0.3 PHP Bug Type: Arrays related Bug description: array_rand() is not returning random values
Description: ------------ Hi guys, array_rand() is not returning random values in my scripts. I am using a multidimension array that is being loaded from an INI file with @parse_ini_file(). Tested under Apache v2.0.52/PHP v5.0.3 on Windows 2000 Advanced Server and a CVS build (php5-win32-200501071130.zip) under Windows as well. Bug appears on both. I don't have a Unix system to test it under PHP 5 (shame on me!) but the problem does NOT occur under Unix/Apache v 1.3.33/PHP v4.3.9. Calling srand() to seed the random number generator seems to fix the problem but the PHP manual clearly says that: "Note: As of PHP 4.2.0, there is no need to seed the random number generator with srand() or mt_srand() as this is now done automatically." (http://ie2.php.net/manual/en/function.array-rand.php) mt_rand(), rand() and mt_srand() also contain notes saying that seeding is not required before calling them. Found several related bugs, but this one mentions the same issue: http://bugs.php.net/bug.php?id=26290 [17 Nov 2003 2:12pm CET] [EMAIL PROTECTED] You forgot to call srand() to generate random key. Hence the lack of random data. [17 Nov 2003 2:25pm CET] [EMAIL PROTECTED] Incorrect documentaion I'm afraid. So, it is one or the other. Either the documentation is wrong or the function is not properly calling seeding the random number generator. Could anyone please have a look? Thanks for looking at this bug. Regards, Christian Reproduce code: --------------- I am using this code to verify the bug: <?php $multiarray = @parse_ini_file('cache.ini',true); for($i=0;$i<100;$i++){ $rand_key = array_rand($multiarray); print $rand_key . '<br>'; if ($i == 1) { $first_item = $rand_key; } if ($first_item == $rand_key) { echo '<br>'; } } ?> You can see the bug at: http://www.turribeach.com.ar/downloads/test.php You can download the INI file I am using and the test.php from: http://www.turribeach.com.ar/downloads/PHP_Test.zip Expected result: ---------------- A random key from the INI file. Actual result: -------------- A key but that it is not random, it is a subset of the original key array. -- Edit bug report at http://bugs.php.net/?id=31453&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31453&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=31453&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=31453&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=31453&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=31453&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=31453&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=31453&r=needscript Try newer version: http://bugs.php.net/fix.php?id=31453&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=31453&r=support Expected behavior: http://bugs.php.net/fix.php?id=31453&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=31453&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=31453&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=31453&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31453&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=31453&r=dst IIS Stability: http://bugs.php.net/fix.php?id=31453&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=31453&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=31453&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=31453&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=31453&r=mysqlcfg
