PHP 4.0 Bug #8646 Updated: rand() or getrandmax() is broken

ID: 8646 Updated by: ohrn Reported By: partek@hotmail.com Old-Status: Open Status: Closed Bug Type: Math related Assigned To: Comments: The proposed fix looks ok. Applied to CVS. Previous Comments: --------------------------------------------------------------------------- [2001-01-10 20:52:24] partek@hotmail.com I'm in the middle of porting a php-3.0.16 website to php-4.0.4, and have run into a minor snafu. There seems to be a difference between what rand() can use, and what getrandmax() reports. The difference seems to lie in one function using RAND_MAX and the other using PHP_RAND_MAX. In php_rand.h the #if HAVE_LRAND48 is satisfied, therefore PHP_RAND_MAX gets set to 2147483647, instead of the system default of 32767 set in /usr/include/stdlib.h. I notice in php-3.0.16 the PHP_RAND_MAX value of 2147483647 is the one that gets used across the board. Would it cause instability to substitute PHP_RAND_MAX for RAND_MAX on line 246 of ext/standard/rand.c? Details: When I do: $randnum = rand(1,99999); It produces the following result: <b>Warning</b>: rand(): Invalid range: 1..99999 in <b>/WWW/www.space.com/docs/header.php3</b> on line <b>537</b><br> A call to getrandmax(); produces the result of 2147483647 line 246 of ext/standard/rand.c uses RAND_MAX }else if ((*p_max)->value.lval-(*p_min)->value.lval > RA ND_MAX){ line 346 of ext/standard/rand.c uses PHP_RAND_MAX return_value->value.lval = PHP_RAND_MAX; Thanks, Dave --------------------------------------------------------------------------- ATTENTION! Do NOT reply to this email! To reply, use the web interface found at http://bugs.php.net/?id=8646&edit=2