count

Berechnen Sie die Anzahl der Einheiten in einem Array oder die Anzahl der Attribute in einem Objekt

Name:count

Kategorie:Array

Programmiersprache:php

Kurzbeschreibung:Berechnet die Anzahl der untergeordneten Knoten des angegebenen Knotens.

Beispiel

Berechnen Sie die Anzahl der untergeordneten Knoten des <Car> -Elements:

 <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">
    <kind/>
    <kind/>
    <kind/>
    <kind/>
  </car>
  <Car name = "bmw">
    <kind/>
    <kind/>
  </car>
</Car>
<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">als</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 hat %d Kindern. <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>

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