[Solved] How to solve this mathematical equation in php [closed]


Just group the D’s first and dont hardcode the indices, use $i

$S = array();
$D = array();
$M = array("1"=>30,"2"=>31,"3"=>30);
$Y = array("1"=>360,"2"=>360,"3"=>360);
$O = 30000;
$P = 0.3;
$N = 10509.74;

for($i = 1, $size = count($M); $i <= $size; $i++){
    $final_D = 0;
    // group the D's first (O-D1), (O-D1-D2), ... and so on
    $temp = array_slice($D, 0, $i);
    foreach ($temp as $key => $value) {
        $final_D += $value;
    }

    $S[$i] = ($O-$final_D)*$P*$M[$i]/$Y[$i];
    $D[$i] = $N - $S[$i];
}

print_r($S); // Array ( [1] => 750 [2] => 522.87338333333 [3] => 256.33483458333 ) 
echo '<br/>';
print_r($D); // Array ( [1] => 9759.74 [2] => 9986.8666166667 [3] => 10253.405165417 )

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solved How to solve this mathematical equation in php [closed]