note 75763 added to function.mt-srand
| From: | Kapr at osu1 dot php dot net | Date: | Thu, 14 Jun 2007 17:25:53 +0000 |
| Subject: | note 75763 added to function.mt-srand | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-127484@lists.php.net to get a copy of this message | ||
To slonmron:
Seed for random numbers generator should be initialized only once, before calling proper rand
function. After that you give pseudorandom sequence by multiple calling rand. Initialization of
random seed is used if 1) You have better source of random seed than implemented algorithm or 2) if
You need always the same sequence of pseudorandom numbers. Example given by You shows only that
first rand result strongly depends on seed, what is by definition. It is not a bug.
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Manual Page -- http://www.php.net/manual/en/function.mt-srand.php
Edit -- https://master.php.net/note/edit/75763
Del: integrated -- https://master.php.net/note/delete/75763/integrated
Del: useless -- https://master.php.net/note/delete/75763/useless
Del: bad code -- https://master.php.net/note/delete/75763/bad+code
Del: spam -- https://master.php.net/note/delete/75763/spam
Del: non-english -- https://master.php.net/note/delete/75763/non-english
Del: in docs -- https://master.php.net/note/delete/75763/in+docs
Del: other reasons-- https://master.php.net/note/delete/75763
Reject -- https://master.php.net/note/reject/75763
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