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  1. <?php
  2.  
  3. for ($i = 2; $i < 100; $i++) {
  4. 	for ($j = 2; $j < $i; $j++) {
  5. 		if (($i % $j) != 0) {
  6. 			continue;
  7. 		} else {
  8. 			$flag = true;
  9. 			break;
  10. 		}
  11. 	}
  12. 	if (!$flag) echo "$i ";
  13. 	$flag = false;
  14. }
Success #stdin #stdout #stderr 0.02s 24508KB
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stdin
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Standard input is empty
stdout
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2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
stderr
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PHP Notice:  Undefined variable: flag in /home/nKpe5C/prog.php on line 12
https://ideone.com/CiO62O
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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