Update Rows, column values represent as keys - mysql

Question

Here's the overview of my table.
The thing is, the value of meta_key column represent as keys.
The problem is, how would I update the fields with user_id. For example, I want to update gender, employee_type, division, mobile that has a different values each field that has a user_id of 1.
I really have no idea how though, but on Eloquent there's this ->insert() to insert multiple values.
$meta_values = [
['user_id' => $user->id, 'meta_key' => 'mobile', 'meta_value' => $mobile,],
['user_id' => $user->id, 'meta_key' => 'address', 'meta_value' => $address,],
['user_id' => $user->id, 'meta_key' => 'gender', 'meta_value' => $gender],
['user_id' => $user->id, 'meta_key' => 'birthday', 'meta_value' => Carbon::parse($birthday)->format('Y-m-d')],
['user_id' => $user->id, 'meta_key' => 'employee_type', 'meta_value' => $employee_type],
['user_id' => $user->id, 'meta_key' => 'division', 'meta_value' => $division],
['user_id' => $user->id, 'meta_key' => 'date_employed', 'meta_value' => Carbon::parse($date_employed)->format('Y-m-d')],
['user_id' => $user->id, 'meta_key' => 'avatar', 'meta_value' => $images->avatar]
];
$user->userMeta()->insert($meta_values);
Here's the insert version, but how's the update version going to be or what it looks like. Any ideas?
I think it would be possible by using loop, but I probably think that it would not be a great idea.
--- EDITED ---
For now, here's my temporary solution. Here's what I'm gonna do in the first place but, until someone has an answer to this problem, this is my solution for now.
//List all fields in an array to be updated
$meta_array = ['mobile', 'address', 'gender', 'birthday', 'employee_type', 'division', 'date_employed'];
for ($i = 0; $i < count($meta_array); $i++) {
$user->userMeta()
->where('meta_key', $meta_array[$i])
->update(['meta_value' => ${$meta_array[$i]}]);
}

Answer 1

Something along this lines should work for you:
$meta_array = array('gender', 'employee_type', 'division', 'mobile');
Your\Model::where('user_id', 1)
->whereIn('meta_key', $meta_array)
->update(['meta_value' => 'some_new_value']);
The above PHP code should correspond to the following raw SQL query which you gave in your question as an example:
UPDATE your_table
SET meta_value='some_new_value'
WHERE user_id=1 AND meta_key IN ('gender', 'employee_type', 'division', 'mobile')