unset

Beispiel

Variablen zerstören:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>  
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hallo Welt!"</span> <span class="token punctuation">;</span>  
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Löschen Sie den Wert der vorherigen Variablen &#39;a&#39;:"</span> <span class="token operator">.</span> <span class="token variable">$ a</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>  
<span class="token keyword">nicht fest</span> <span class="token punctuation">(</span> <span class="token variable">$ A</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>  
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Der Wert der Variablen &#39;a&#39; nach dem Löschen:"</span> <span class="token operator">.</span> <span class="token variable">$ a</span> <span class="token punctuation">;</span>  
<span class="token delimiter important">?></span></span>

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