laravel collect结果集group分组合并数据

1、需求

• 将相同 apply_id 的 apply_remark 用 ; 拼接

 $r = [
     ['apply_id' => 1, 'apply_remark' => 'xxx'],
     ['apply_id' => 1, 'apply_remark' => 'xxx2'],
     ['apply_id' => 2, 'apply_remark' => 'xxx3'],
 ];

2、编码

$r = [
    ['apply_id' => 1, 'apply_remark' => 'xxx'],
    ['apply_id' => 1, 'apply_remark' => 'xxx2'],
    ['apply_id' => 2, 'apply_remark' => 'xxx3'],
];
$rs = collect($r)->groupBy('apply_id')
    ->map(function ($group) {
        return [
            'apply_id' => $group->first()['apply_id'],
            'apply_remark' => $group->pluck('apply_remark')->implode(';'),
        ];
    })
    ->values()
    ->toArray();
dd($rs);

3、结果

array:2 [
  0 => array:2 [
    "apply_id" => 1
    "apply_remark" => "xxx;xxx2"
  ]
  1 => array:2 [
    "apply_id" => 2
    "apply_remark" => "xxx3"
  ]
]