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Output prime numbers less than 1000

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Release： 2016-07-25 08:48:50
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  2. for($i = 2; $i < 1001; $i++) {
  3. $primes = 0;
  4. for($k = 1; $k <= $i; $ k++)
  5. if($i%$k === 0) $primes++;
  6. if($primes <= 2) // An integer that can be divided by 1 and itself (excluding 0)
  7. echo " {$i}
    ";
  8. }
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输出小于1000的质数
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