我下面的PHP代码中有一个数组，我想将此数组转换为按数据值分组。简化数组总是很难的
Array
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
[2] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[3] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
我希望这个数组：
(
[0] => Array
(
[ctg_name] => Beginner
[cat_id] => 1
[ data] => Array
(
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
)
)
[1] => Array
(
[ctg_name] => Mobility
[cat_id] => 3
[ data] => Array
(
[0] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[1] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
)
)
我尝试过，但是没有得到预期的结果。
foreach($video as $val){
$result[$val['video_category']][] = $val;
}
它返回如下：
Array
(
[1] => Array
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
)
[3] => Array
(
[0] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[1] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
)
有人有这样做的有效方法吗？ 请帮我 谢谢
Array
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
[2] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[3] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
我希望这个数组：
(
[0] => Array
(
[ctg_name] => Beginner
[cat_id] => 1
[ data] => Array
(
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
)
)
[1] => Array
(
[ctg_name] => Mobility
[cat_id] => 3
[ data] => Array
(
[0] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[1] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
)
)
我尝试过，但是没有得到预期的结果。
foreach($video as $val){
$result[$val['video_category']][] = $val;
}
它返回如下：
Array
(
[1] => Array
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
)
[3] => Array
(
[0] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[1] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
)
有人有这样做的有效方法吗？ 请帮我 谢谢
答案 0 :(得分：2)
尝试此代码
<?php
$arr = array(
0 => array
(
'video_id' => 14,
'video_title' => 'test1',
'video_category_name' => 'Beginner',
'video_category' => 1
),
1 => array
(
'video_id' => 18,
'video_title' => 'test',
'video_category' => 1,
'video_category_name' => 'Beginner'
),
2 => array
(
'video_id' => 17,
'video_title' => 'first',
'video_category' => 3,
'video_category_name' => 'Mobility'
),
3 => array
(
'video_id' => 19,
'video_title' => 'second',
'video_category' => 3,
'video_category_name' => 'Mobility'
)
);
echo "<pre>";
$newArr = array();
foreach($arr as $k=>$v){
$newArr[$v['video_category_name']]['ctg_name']=$v['video_category_name'];
$newArr[$v['video_category_name']]['cat_id']=$v['video_category'];
$newArr[$v['video_category_name']]['data'][]=$v;
}
$newArr1 = array();
foreach($newArr as $k=>$v){
$newArr1[] = $v;
}
print_r($newArr);
?>
输出
Array
(
[Beginner] => Array
(
[ctg_name] => Beginner
[cat_id] => 1
[data] => Array
(
[0] => Array
(
[video_id] => 14
[video_title] => test1
[video_category_name] => Beginner
[video_category] => 1
)
[1] => Array
(
[video_id] => 18
[video_title] => test
[video_category] => 1
[video_category_name] => Beginner
)
)
)
[Mobility] => Array
(
[ctg_name] => Mobility
[cat_id] => 3
[data] => Array
(
[0] => Array
(
[video_id] => 17
[video_title] => first
[video_category] => 3
[video_category_name] => Mobility
)
[1] => Array
(
[video_id] => 19
[video_title] => second
[video_category] => 3
[video_category_name] => Mobility
)
)
)
)
答案 1 :(得分：1)
您可以尝试一下。在您的foreach循环之后。
foreach($video as $val){
$result[$val['video_category']][] = $val;
}
$final_arr = [];
foreach($result as $val){
$final_arr[] = [
'ctg_name'=>$val[0]['video_category_name'],
'cat_id'=>$val[0]['video_category'],
'data'=>$val
]
}