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php多维数组把value值赋值到key,该怎么处理

程序员文章站 2022-03-24 17:00:47
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php多维数组把value值赋值到key
php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);


?>


------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);
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
)

)

)
还原回 json
echo json_encode($a, JSON_PRETTY_PRINT 
------解决思路----------------------
JSON_UNESCAPED_SLASHES);
{
"image": [
{
"1": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg",
"picture_id": 1
},
{
"2": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg",
"picture_id": 2
},
{
"3": "/upload/14d4aaf3c5ef5b93e6c4c7418428ea71.jpg",
"picture_id": 3
}
]
}
php多维数组把value值赋值到key,该怎么处理

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