unset

Exemple

Détruiser les variables:

 <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">"Hello World!"</span> <span class="token punctuation">;</span>  
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Supprimer la valeur de la variable précédente &#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">unset</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">"La valeur de la variable &#39;a&#39; après la suppression:"</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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