count

例

<car>要素の子ノードの数を計算します。

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token variable">$ xml</span> <span class="token operator">=</span> <span class="token string heredoc-string"><span class="token delimiter symbol"><span class="token punctuation"><<<</span> xml</span>
  <Cars>
    <car name = "volvo">
    <子/>
    <子/>
    <子/>
    <子/>
  </car>
  <car name = "bmw">
    <子/>
    <子/>
  </car>
</cars>
<span class="token delimiter symbol">XML <span class="token punctuation">;</span></span></span>

<span class="token variable">$ elem</span> <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">SimplexmLelement</span> <span class="token punctuation">（</span> <span class="token variable">$ xml</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token keyword">foreach</span> <span class="token punctuation">（</span> <span class="token variable">$ elem</span> <span class="token keyword">as</span> <span class="token variable">$ car</span> <span class="token punctuation">）</span>
  <span class="token punctuation">{</span>
  <span class="token function">printf</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"％sは％d子供を持っています。<br>"</span> <span class="token punctuation">、</span> <span class="token variable">$ car</span> <span class="token punctuation">[</span> <span class="token string single-quoted-string">&#39;name&#39;</span> <span class="token punctuation">]</span> <span class="token punctuation">、</span> <span class="token variable">$ car-</span> <span class="token operator">></span> <span class="token function">count</span> <span class="token punctuation">（</span> <span class="token punctuation">）</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token delimiter important">？></span></span>

インスタンスを実行します