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  1. <?php
  2. $MyNum=113;
  3.   $n = 0; $m=0;
  4.   if ($MyNum == 2 || $MyNum == 3) { $m++;
  5.     echo $MyNum." is a prime number.";
  6.   } elseif ($MyNum % 6 == 1 || $MyNum % 6 == 5) {
  7.       for($i = 2; $i*$i <= $MyNum; $i++) { $m++;
  8.         if($MyNum % $i == 0){
  9.           $n++;
  10.           break;
  11.         }
  12.       }
  13.  
  14.       if ($n == 0){
  15.         echo $MyNum." is a prime number.";
  16.       } else {
  17.         echo $MyNum." is not a prime number.";
  18.       }
  19.   } else {
  20.     echo $MyNum." is not a prime number.";
  21.   }
  22.  
  23.   echo $m." loop run";
  24. ?>
Success #stdin #stdout 0.02s 25888KB
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113 is a prime number.9 loop run
https://ideone.com/vdsGno
language:
PHP (php 7.3.5)
created:
1 year ago
visibility:
public

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