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Microsecond Help - Beginner

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>
Oct 5 '05 #1
2 1660
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>

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================
Oct 5 '05 #2
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

Oct 5 '05 #3

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