php - 如何在数组中添加所有数字

Question

  [
      {
         "total": 71
      },
      {
         "total": 66
      }
  ]

如何将这两个数字相加得到给我= 137.我已经尝试过array_sum($ array_result)但是吐痰和错误说:

array_sum() expects parameter 1 to be array, object given

这是我的代码

$result = DB::table('marks')->where([
        ['term', $request->term],
        ['subject', $request->subject],
        ['class', $student->class],
        ['arm', $student->arm],
    ])->select('total')->get();

return array_sum($result);

return redirect()->back()->with('success', 'Results marked successfully.');

Answer 1

如果您只需要总结一下total,请使用sum()Query Builder方法:

$result = DB::table('marks')->where([
    ['term', $request->term],
    ['subject', $request->subject],
    ['class', $student->class],
    ['arm', $student->arm],
])->sum('total');