<?php for ($i = 2; $i < 100; $i++) { for ($j = 2; $j < $i; $j++) { if (($i % $j) != 0) { continue; } else { $flag = true; break; } } if (!$flag) echo "$i "; $flag = false; }
Standard input is empty
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
PHP Notice: Undefined variable: flag in /home/nKpe5C/prog.php on line 12