<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>$i</span>$n</span>;<span>$i</span>++)
{
<span>for</span>(<span>$k</span>=<span>1</span>;<span>$k</span>$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>$i</span>;<span>$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></code>以上就介绍了php输出杨辉三角，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。
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