settype

實例

將變量轉換為特定類型：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$a</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"32"</span> <span class="token punctuation">;</span> <span class="token comment">// string</span>
<span class="token function">settype</span> <span class="token punctuation">(</span> <span class="token variable">$a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"integer"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// $a 現在是整數</span>

<span class="token variable">$b</span> <span class="token operator">=</span> <span class="token number">32</span> <span class="token punctuation">;</span> <span class="token comment">// integer</span>
<span class="token function">settype</span> <span class="token punctuation">(</span> <span class="token variable">$b</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"string"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// $b 現在是字符串</span>

<span class="token variable">$c</span> <span class="token operator">=</span> <span class="token constant boolean">true</span> <span class="token punctuation">;</span> <span class="token comment">// boolean</span>
<span class="token function">settype</span> <span class="token punctuation">(</span> <span class="token variable">$c</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"integer"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// $c 現在是整數(1)</span>
<span class="token delimiter important">?></span></span>

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