php - shifting variable value by if else simplification

Question

I'm trying to make something like this to my variable data value...

$maxvalue = 0;
$basevalue = 0;
if($basevalue == 0) {$maxvalue = 0;}
else if ($basevalue == 1) {$maxvalue = 884;}
else if ($basevalue == 2) {$maxvalue = 1819;}
else if ($basevalue == 3) {$maxvalue = 2839;}

and so on.. i believe there is no exact computation on how the $maxvalue shifts as the basevalue increase. Can someone suggest me a simplier way to do this? thanks in advance!

im not sure.. its really weird. here's 1-10 values.. 1-884, 2-1819, 3-2839, 4-3978, 5-5270, 6-6749, 7-8449, 8-10404, 9-12648, 10-15215 ... the fact that its until 100.. lol — CudoX
– CudoX, Commented Jun 2, 2013 at 10:18
Did it work? Or did you put every value in an array after all? — GolezTrol
– GolezTrol, Commented Jun 5, 2013 at 15:21

deceze · Accepted Answer · 2013-06-02 10:04:53Z

6

$maxvalues = array(0, 884, 1819, 2839, ...);
$maxvalue  = $maxvalues[$basevalue];

answered Jun 2, 2013 at 10:04

deceze♦

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GolezTrol · Accepted Answer · 2013-06-02 17:20:02Z

1

It looks like there's a pattern, almost like a faculty, but also with some other calculations. All numbers are multiples of 17. The following function returns the numbers you provided, so I think it might work for the higher numbers too:

function getMaxValue($base)
{
    // Factor of $base = 51 + $base^2 + Factor($base - 1). You
    // could solve that in a recursion, but a loop is generally better.
    $factor = 0;
    for ($i = 1; $i <= $base; $i++)
      $factor += 51 + ($i * $i);
    return $factor * 17;
}

// Test
for ($i = 0; $i < 100; $i++)
{
    echo "$i -- " . getMaxValue($i) . "<br>\n";
}

answered Jun 2, 2013 at 17:20

GolezTrol

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Comments

CudoX · Accepted Answer · 2013-06-06 17:00:47Z

0

Here's the solution that prevented me putting all of them in an array..

$maxvalue = 17/6*(2*($basevalue*$basevalue*$basevalue)+3
($basevalue*$basevalue)+307*$basevalue);

Thanks for all the help

answered Jun 6, 2013 at 17:00

CudoX

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