PHP出力ヤン・フイ・トライアングル

<code><span><span><span><?php</span><span><span>function</span><span>Triangle</span><span>(<span>$n</span>)</span>
         {</span><span>for</span>(<span>$i</span>=<span>1</span>;<span>$i</span><=<span>$n</span>;<span>$i</span>++)
                   {
                           <span>for</span>(<span>$k</span>=<span>1</span>;<span>$k</span><=<span>$n</span>-<span>$i</span>;<span>$k</span>++)
                                   <span>echo</span><span>"  "</span>;
                           <span>for</span>(<span>$j</span>=<span>1</span>;<span>$j</span><=<span>$i</span>;<span>$j</span>++)
                           {
                                  <span>$a</span>[<span>$i</span>][<span>1</span>] = <span>1</span>;
                                  <span>if</span>(<span>$i</span> == <span>$j</span>)
                                          <span>$a</span>[<span>$i</span>][<span>$j</span>] =<span>1</span>;
                                  <span>else</span><span>$a</span>[<span>$i</span>][<span>$j</span>]=<span>$a</span>[<span>$i</span>-<span>1</span>][<span>$j</span>-<span>1</span>]+<span>$a</span>[<span>$i</span>-<span>1</span>][$    j];
                                  <span>echo</span><span>$a</span>[<span>$i</span>][<span>$j</span>];
                                  <span>echo</span><span>"  "</span>;
                          }
                          <span>echo</span><span>"<br>"</span>;
                  }
          }
    Triangle(<span>9</span>);
  <span>?></span></span></span></code>

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以上、PHP 出力のヤン・フイ・トライアングルを内容も含めて紹介しましたが、PHP チュートリアルに興味のある友人の参考になれば幸いです。