通过在创建子数组时分配键来创建数组数组。

I could write it out like this.

我可以这样写。

 $key = "sid";
 $values = array(1,2,3);
 $desired_array = array();

 foreach($values as $value){
     $desired_array[] = array($key => $value);
 }

 print_r($desired_array);
 $k