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Posted by Kevin Cloutier on 09/29/86 11:28
Jerry Stuckle wrote:
> Kevin Cloutier wrote:
>
>> Hi,
>>
>> I'm am brand new to PHP and I'm getting up to speed (slowly) running
>> through some example tutorials. But I am having trouble getting a For
>> Loop to work.
>>
>> It is supposed to return the microscond from the server each time it
>> loops, but it is returning the same second each time through. I'm
>> assuming this is because "function make_seed()" is declared outside of
>> the loop, but I'm stuck on how to rectify this.
>>
>> Below is my code, any help would be appreciated!
>>
>> Kevin
>>
>> ------------------------------------------
>> <html>
>> <? function make_seed()
>> {
>> list($usec, $sec) = explode(' ', microtime());
>> return (float) $sec + ((float) $usec * 100000);
>> }
>> srand(make_seed());
>> $randvalue = rand(1,100);
>>
>> ?>
>> <ul>
>> <?
>> for ($i = 1; $i<10; $i++){ ?>
>> <li><strong><?= $randvalue ?></strong></li>
>> <?}?>
>> </ul>
>> </html>
>
>
> Hi, Kevin,
>
> It's always returning the same value because you're not calling
> make_seed() in your for loop.
>
> Try this:
>
> <html>
> <?
> function make_seed()
> {
> list($usec, $sec) = explode(' ', microtime());
> return (float) $sec + ((float) $usec * 100000);
> }
>
> ?>
> <ul>
> <?
> for ($i = 1; $i<10; $i++){
> srand(make_seed()); // Call from within loop
> $randvalue = rand(1,100);
> ?>
> <li><strong><?= $randvalue ?></strong></li>
> <?}?>
> </ul>
> </html>
>
Jerry,
That was it, thanks for your help! I'm not sure why I didn't pick that
up. It's never good to try and learn with examples that are flawed!
Thanks again,
Kevin
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