数组使用+号添加元素
<code><span>$test</span> = [];<span>$test</span> += [<span>"w"</span>=><span>1233</span>];<span>$test</span> += [<span>"w1"</span>=><span>1233</span>];<span>$test</span> += [<span>"w2"</span>=><span>1233</span>];<span>$test</span> += [<span>"w3"</span>=><span>1233</span>];var_dump(<span>$test</span>);<span>//output;</span><span>array</span>(<span>4</span>) { <span>'w'</span> => int(<span>1233</span>) <span>'w1'</span> => int(<span>1233</span>) <span>'w2'</span> => int(<span>1233</span>) <span>'w3'</span> => int(<span>1233</span>)}</code>
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