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List of prime numbers between two number

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List of prime numbers between two number

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  1. <?php
  2.  
  3. /**
  4.  * Softafzar.Net | Developers home_
  5.  * http://softafzar.net
  6.  */
  7.  
  8.  
  9. $num1 = 2;
  10. $num2 = 200;
  11.  
  12. $col = 0;
  13. echo "<h1>List of prime numbers from $num1 to $num2 </h1>";
  14. echo '<table width="60%" border="1"><tr>';
  15. foreach ( Prime ( $num1, $num2 ) as $item ) {
  16.     if ($col >= 10) {
  17.         echo '</tr><tr>';
  18.         $col = 0;
  19.     }
  20.     echo "<td> $item </td>";
  21.     $col ++;
  22. }
  23. echo '</tr></table>';
  24.  
  25. function Prime($num1, $num2) {
  26.     $prime_numbers = array ();
  27.     while ( $num1 < $num2 ) {
  28.         $isprime=true;
  29.         for($i = 2; $i <= sqrt ( $num1 ); $i ++) {
  30.             if ($num1 % $i == 0)
  31.                 $isprime=false;
  32.         }
  33.  
  34.         if ( $isprime ) {
  35.             $prime_numbers [] = $num1;
  36.         }
  37.         $num1 ++;
  38.     }
  39.     return $prime_numbers;
  40. }
  41. ?>

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