CODEWITHSUNDEEP
php
MidhunKrishna
MidhunKrishna

Reputation: 621

Any other better ways than this messy code to write php script that finds the minimum number that is divisible from 1 to 12

My idea was something like this for finding the minimum number that is divisible from 1 to 12. The problem is, i have to use if condition all the way-long as the range of number increases. Is there any better way than this messy code.Sorry am a beginner from level 0.

<?php
for ($i = 1; $i <= 999999; $i++) {
  $num = 12 * $i;

  if ($num % 12 == 0) {
    if ($num % 11 == 0) {
      if ($num % 10 == 0) {
        if ($num % 9 == 0) {
          if ($num % 8 == 0) {  
            if ($num % 7 == 0) {
              if ($num % 6 == 0) {
                if ($num % 5 == 0) {
                  if ($num % 4 == 0) {  
                    if ($num % 3 == 0) {
                      if ($num % 2 == 0) {
                        echo $num;
                        exit();
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}
?>

Upvotes: 1

Views: 66

Answers (4)

Daniel
Daniel

Reputation: 411

I'd use a function + recursion to make it a little more flexible: 

function foo($check, $max, $end) {
    if ($check%$max == 0 && $max >= $end){
            if ($max == $end) {
                    return $check;
            }
            return foo($check, $max-1, $end);
    }    
}

for ($i=1; $i<=999999;$i++) {
    $res = foo($i, 12, 2);
    if ($res) break;
}
echo $res;
?>

Upvotes: 0

Sean Bright
Sean Bright

Reputation: 120704

Here you go:

for ($i = 1, $num = 12; $i <= 999999; $i++, $num += 12) {
  if ($num % 11 || $num % 10 || $num % 9 || $num % 8 || $num % 7)
    continue;
  echo $num;
  break;
}

Upvotes: 1

Mark Baker
Mark Baker

Reputation: 212482

Perhaps something like:

$max = 12;
$num = $max;
while(true) {
    for($i = 2; $i <= $max; ++$i) {
        if ($num % $i !== 0) break;
    }
    if ($i > $max) break;
    $num += $max;
}

var_dump($num);

Upvotes: 2

kishu27
kishu27

Reputation: 3120

<?php
 for ($i = 1; $i < 999999; $i++) {
     $num = 12 * $i;
     $divisible = true;
     for ($j = $num; $j > 1; $j --) {
         if ($num % $j !== 0) {
             $divisible = false;
             break;
         }
     }
     if ($divisible === true) {
        echo $num;
        break;
     }
 }

Upvotes: 0

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