PHP キーボードを使用して、生徒 4 人の生徒番号、名前、中国語、数学、英語の情報を入力し、各生徒の平均点を計算して出力します。

<code><span>$student</span>=<span>array</span>();
<span>$student</span>=<span>array</span>(
          <span>array</span>(<span>'name'</span> =><span>'a'</span> ,<span>'chinese'</span>=><span>80</span>,<span>'math'</span>=><span>80</span>,<span>'english'</span>=><span>70</span>,<span>'avg'</span>=><span>''</span> ),
          <span>array</span>(<span>'name'</span> =><span>'b'</span> ,<span>'chinese'</span>=><span>70</span>,<span>'math'</span>=><span>70</span>,<span>'english'</span>=><span>90</span>,<span>'avg'</span>=><span>''</span> ),
          <span>array</span>(<span>'name'</span> =><span>'c'</span> ,<span>'chinese'</span>=><span>60</span>,<span>'math'</span>=><span>90</span>,<span>'english'</span>=><span>80</span>,<span>'avg'</span>=><span>''</span> ),
          <span>array</span>(<span>'name'</span> =><span>'d'</span> ,<span>'chinese'</span>=><span>50</span>,<span>'math'</span>=><span>60</span>,<span>'english'</span>=><span>60</span>,<span>'avg'</span>=><span>''</span> ),
    );
<span>//计算平均成绩</span><span>for</span>(<span>$i</span>=<span>0</span>;<span>$i</span><count(<span>$student</span>);<span>$i</span>++){
      <span>$total</span>=<span>$student</span>[<span>$i</span>][<span>'chinese'</span>]+<span>$student</span>[<span>$i</span>][<span>'english'</span>];
      <span>$total</span>+=<span>$student</span>[<span>$i</span>][<span>'math'</span>];
      <span>$student</span>[<span>$i</span>][<span>'avg'</span>]=<span>$total</span>/<span>3</span>;
 }
<span>//输出</span><span>for</span>(<span>$i</span>=<span>0</span>;<span>$i</span><count(<span>$student</span>);<span>$i</span>++){
      <span>echo</span><span>'name'</span>.<span>'=>'.<span>$student</span>[<span>$i</span>][<span>'name'</span>].<span>'chinese'</span>.<span>'=>'</span>.<span>$student</span>[<span>$i</span>][<span>'chinese'</span>].<span>'math'</span>.<span>'=>'</span>.<span>$student</span>[<span>$i</span>][<span>'math'</span>].<span>'english'</span>.<span>'=>'</span>.<span>$student</span>[<span>$i</span>][<span>'english'</span>].<span>'avg'</span>.<span>'=>'</span>.<span>$student</span>[<span>$i</span>][<span>'avg'</span>].<span>'<br>'</span>;
 }
</code>