array_flip

實例

反轉數組中所有的鍵以及它們關聯的值：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$a1</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"green"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"blue"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"d"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"yellow"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$result</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">array_flip</span> <span class="token punctuation">(</span> <span class="token variable">$a1</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span> <span class="token variable">$result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

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