[PHP] srand thought
Quick question. Im using srand to seed array_rand in a script. I read that srand should only be called once per script under the srand manual page. Im using ADODB, and that also uses srand. Now should that warning be a literal warning or should that be 'use srand once per page'?? Thanks -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] srand thought
On Thu, 2 May 2002, Gerard Samuel wrote: Quick question. Im using srand to seed array_rand in a script. I read that srand should only be called once per script under the srand manual page. Im using ADODB, and that also uses srand. Now should that warning be a literal warning or should that be 'use srand once per page'?? It's probably not worth worrying about unless both calls use the same seed and you are generating one or more random numbers between the two srand() calls that are part of the same sequence as random numbers generated after the second one. miguel -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] srand thought
Yeah. If I understand correctly, if you do, like: ?php $seed = time(); srand($seed); $var = rand(0,50); echo $var\n; srand($seed); $var2 = rand(0,50); echo $var2\n; ? Then, I believe, the theory is that you will get the same random number twice. Mike Miguel Cruz wrote: On Thu, 2 May 2002, Gerard Samuel wrote: Quick question. Im using srand to seed array_rand in a script. I read that srand should only be called once per script under the srand manual page. Im using ADODB, and that also uses srand. Now should that warning be a literal warning or should that be 'use srand once per page'?? It's probably not worth worrying about unless both calls use the same seed and you are generating one or more random numbers between the two srand() calls that are part of the same sequence as random numbers generated after the second one. miguel -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
