PHP和JavaScrip分别获取关联数组的键值示例代码_PHP教程

$o = array('x'=>1, 'y'=>2, 'z'=>3); 
$arr = array(); 
$i = 0; 
foreach( $o as $arr[$i++]=>$v )/*empty*/; 
var_dump($arr); //$arr = array('x', 'y', 'z'); 
 
JavaScrip版： 
 代码如下:

var o = {x:1, y:2, z:3}; 
var arr = [], i = 0; 
for ( arr[i++] in o ) /*empty*/ ; 
console.log( arr ); //arr = ['x', 'y', 'z']; 


http://www.bkjia.com/PHPjc/313623.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/313623.htmlTechArticlePHP版：  代码如下:
$o = array('x'=1, 'y'=2, 'z'=3); $arr = array(); $i = 0; foreach( $o as $arr[$i++]=$v )/*empty*/; var_dump($arr); //$arr = array('x', 'y', 'z');...