[SOLVED] calculate product of parent rows in while loop

[Zaynt]

I need replace the $n in cell 2 of the table with the the product of all the parent rows

 

e.g row 5 will output the value 120 (1*2*3*4*5)

 

anyone have any idea on how to solve this problem?

 

<table border="1">
<?php
$n = 0;

while($n<25){
$n++;
echo"<tr>";
echo"<td>Row number $n</td>";
echo" <td>$n</td>";
echo"</tr>";
}
?>
</table>

[Mark Baker]

If it's just a simple factorial:

function factorial($factLoop=1) {
$factorial = 1;
while ($factLoop > 1) {
	$factorial *= $factLoop--;
}
return $factorial;
}

for ($i = 1; $i < 12; $i++) {
echo factorial($i).'<br />';
}

[Zaynt]

ok...that was a little bit more complicated than I imagined. I got this assignment at school and we have been working with php for 2 days now, and have just learned how to use for,while and do while -loops. We haven't even started with functions yet, I have just played with some on my own.

 

I will try to wrap my mind around this code of yours, because it seems to work just fine. Now I just have to figure out how it works.

 

Thank you very much for the help so far(I may need some more later on)!

[Mark Baker]

If you don't want the function:

for ($i = 1; $i < 12; $i++) {

$factLoop = $i;

$factorial = 1;

while ($factLoop > 1) {

$factorial *= $factLoop--;

}

echo $factorial.'<br />';

}

[code=php:0]