array_column()提取二维数组中某个值

<?php 
    $multipleCommodity = array(
            0=>array('name'=>'花花','age'=>20),
            1=>array('name'=>'草草','age'=>18)
        );
    $arr1=array_column($multipleCommodity,'name');
    $str1=implode(',',$arr1);
    echo $str1;

 ?>