PHP和JavaScrip分別擷取關聯陣列的索引值範例程式碼_PHP教程

PHP版：
複製代碼 代碼如下:
$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');

JavaScrip版：
複製代碼 代碼如下:
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： 複製代碼 代碼如下: $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');...

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