我遇到for循环问题。 在mysql中重复值

Question

My controller

for($a=0; $a<count($area_id); $a++)
{
  for($i=0; $i<count($estimated_time); $i++)
   {
      $project_area = new Projectarea;
      $project_area->area_id = $area_id[$a];
      $project_area->project_id = $project->id;
      $project_area->estimated_time = $estimated_time[$i];
      $project_area->save();
    }
}
return Redirect::to('admin');

my view

<div class="form-group">
  <label for="select_client">Choose area</label>
     <select class="form-control" name="area_id[]"  multiple="multiple">
     @foreach($area as $row)
        <option class="click" value="{{ $row->id }}" area="{{ $row->id }}">{{$row->area_name}}</option>
     @endforeach
     </select>

    @foreach($area as $row)
      <input class="other" id="{{ $row->id }}" type="text" name="estimated_time[]" placeholder="{{ $row->area_name }}" />
    @endforeach
</div>

mysql result.

if i select for example three values from multiple select i have this result in database

project_id  area_id estimated_time
123           7          0
123           7          2
123           7          3
123           7          4
123           7          0
123           8          0
123           8          2
123           8          3
123           8          4
123           8          0
123           9          0
123           9          2
123           9          3
123           9          4
123           9          0
124           8          0

Thank you

Answer 1

Your error is due to double foreach, you foreach too many time.

3 value selected = 3 loop (for($a=0; $a<count($area_id); $a++)) * n loop for every estimated_time (for($i=0; $i<count($estimated_time); $i++))

So remove second foreach and acces POST via array :

var_dump($_POST);
for($a=0; $a<count($_POST['area_id']); $a++)
{

    var_dump($_POST['estimated_time'][$_POST['area_id'][$a]]);
    var_dump($_POST['area_id'][$a]);
    echo 'insert';

}

Edit : it s a correction our your code, but your concption still wrong