note 116384 added to function.rand
| From: | Anonymous | Date: | Thu, 25 Dec 2014 14:56:25 +0000 |
| Subject: | note 116384 added to function.rand | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-201248@lists.php.net to get a copy of this message | ||
If you need to call rand() over 32768 times, use mt_rand() instead.
Because rand() will return a repeated sequence every 32768 calls.
i.e.
$v[] = array();
for( $i=0; $i<100000; $i++ ){
$v[] = rand();
}
you will get an array that $v[n] equals to $v[n+32768]
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Manual Page -- http://php.net/manual/en/function.rand.php
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