settype

例

変数を特定のタイプに変換します。

 <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">// 弦</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は整数になりました</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">//整数</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は文字列になりました</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は整数になりました（1）</span>
<span class="token delimiter important">？></span></span>

自分で試してみてください