compact

實例

例子1

創建一個包含變量名和它們的值的數組：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$firstname</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">;</span>
<span class="token variable">$lastname</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Gates"</span> <span class="token punctuation">;</span>
<span class="token variable">$age</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"60"</span> <span class="token punctuation">;</span>

<span class="token variable">$result</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">compact</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"firstname"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"lastname"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"age"</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>

<span class="token function">print_r</span> <span class="token punctuation">(</span> <span class="token variable">$result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

親自試一試

例子2

使用不匹配變量的字符串，以及一個變量名數組：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$firstname</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">;</span>
<span class="token variable">$lastname</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Gates"</span> <span class="token punctuation">;</span>
<span class="token variable">$age</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"60"</span> <span class="token punctuation">;</span>

<span class="token variable">$name</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"firstname"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"lastname"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$result</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">compact</span> <span class="token punctuation">(</span> <span class="token variable">$name</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"location"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"age"</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>

<span class="token function">print_r</span> <span class="token punctuation">(</span> <span class="token variable">$result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

親自試一試