php小技巧把数组的键和值交换形成了新的数组,查找值取得键_PHP教程

$cityname = array_flip($city_DB[name]); //把数组的键和值交换形成了新的数组 
$city_name = array_search($city_id,$cityname,true); //查找值取得键 


http://www.bkjia.com/PHPjc/323421.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/323421.htmlTechArticle 代码如下:
$cityname = array_flip($city_DB[name]); //把数组的键和值交换形成了新的数组 $city_name = array_search($city_id,$cityname,true); //查找值取...