array_merge_recursive
递归地合并一个或多个数组
把两个数组合并为一个数组:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$a1</span><span class="token operator">=</span><span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"a"</span><span class="token operator">=></span><span class="token string double-quoted-string">"red"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"b"</span><span class="token operator">=></span><span class="token string double-quoted-string">"green"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token variable">$a2</span><span class="token operator">=</span><span class="token keyword">array</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">"b"</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 function">print_r</span><span class="token punctuation">(</span><span class="token function"></span><mark><span class="token function">array_merge_recursive</span><span class="token punctuation">(</span><span class="token variable">$a1</span><span class="token punctuation">,</span><span class="token variable">$a2</span><span class="token punctuation">)</span></mark><span class="token punctuation"></span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>