Doc #74246 [NEW]: Clarify that although rand() is an alias for mt_rand() it has BC differences

From: peehaa Operating system: PHP version: Irrelevant Package: Documentation problem Bug Type: Documentation Problem Bug description:Clarify that although rand() is an alias for mt_rand() it has BC differences Description: ------------ As of 7.1 rand() is mostly an alias of mt_rand. This is explained in the doc notes http://php.net/manual/en/function.rand.php. However it does have some difference to preserve BC. See also the user note @ http://php.net/manual/en/function.rand.php#120782: From PHP 7.1 rand() is documented as an alias of mt_rand(). Actually, if they are called with two arguments where the second is smaller than the first, their output differs. For example var_dump(rand(2,1), mt_rand(2,1)); may return Warning: mt_rand(): max(1) is smaller than min(2) int(2) bool(false) where rand() will return a random value between $max and $min Expected result: ---------------- Clarify taht rand() isn't an exact alias. -- Edit bug report at https://bugs.php.net/bug.php?id=74246&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74246&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74246&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74246&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74246&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74246&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74246&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74246&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74246&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74246&r=support Expected behavior: https://bugs.php.net/fix.php?id=74246&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74246&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74246&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74246&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74246&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74246&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74246&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74246&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74246&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74246&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74246&r=mysqlcfg