循环语句基本语法

多维数组获取特定键值

for方法，需要知道数组长度，遍历时使用$i

 $resultList =$result['projectList'];
 $resultNum = count( $resultList);
 $arg = array();

 for ($i = 0; $i < $resultNum; $i++)
   {       
    $arg['uuid'] = $uuid;
    $arg['clusterName'] = $resultList[$i]['colonyName'];
    }
                
           

简化后方法

foreach，key替代上面i；

      foreach ($resultList  as $key => $value) {
                $arg[] = $value['colonyName'];
            }