php多维数组把value值赋值到keyphp多维数组把value值赋值到key，改成这种效果，怎么做 "image": [ { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 1 }, { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 2 }, { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 3 } ]改成： "image": [ { "1": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 1 }, { "2": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 2 }, { "3": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 3 } ]------解决思路----------------------$arr=array(array('local_path' =>'aaaaa','picture_id' =>1),array('local_path'=>'bbbbbbb','picture_id'=>2),array('local_path'=>'ccccccc','picture_id'=>3),);function change($arrr,$a=0){foreach($arrr as $key=>$value){$arr[$a][$value['picture_id']]=$value['local_path'];$arr[$a]['picture_id']=$value['picture_id'];$a++;}return $arr;}$arry=change($arr);print_r($arry);?>登录后复制------解决思路----------------------你这不是 php 的数组，是 json$s = "image": [ { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 1 }, { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 2 }, { "local_path": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 3 } ]TXT;$a = json_decode('{'. $s .'}', 1);foreach($a['image'] as &$item) { $item = array( $item['picture_id'] => $item['local_path'], 'picture_id' => $item['picture_id'] );}print_r($a);登录后复制Array( [image] => Array ( [0] => Array ( [1] => /upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg [picture_id] => 1 ) [1] => Array ( [2] => /upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg [picture_id] => 2 ) [2] => Array ( [3] => /upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg [picture_id] => 3 ) ))登录后复制还原回 jsonecho json_encode($a, JSON_PRETTY_PRINT ------解决思路---------------------- JSON_UNESCAPED_SLASHES);登录后复制{ "image": [ { "1": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 1 }, { "2": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 2 }, { "3": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg", "picture_id": 3 } ]}登录后复制