PHP和JavaScrip分别获取关联数组的键值示例代码

<br>$o = array('x'=>1, 'y'=>2, 'z'=>3); <br>$arr = array(); <br>$i = 0; <br>foreach( $o as $arr[$i++]=>$v )/*empty*/; <br>var_dump($arr); //$arr = array('x', 'y', 'z'); <br> <br>JavaScrip版： <br><span><u></u></span> 代码如下:<pre class="brush:php;toolbar:false layui-box layui-code-view layui-code-notepad"><ol class="layui-code-ol"><li><br>var o = {x:1, y:2, z:3}; <br>var arr = [], i = 0; <br>for ( arr[i++] in o ) /*empty*/ ; <br>console.log( arr ); //arr = ['x', 'y', 'z']; <br></li><li>            </li><li>                                </li></ol></pre>