php - update database field on submit -

when admin ticks row or more in table , clicks on approve button, row data (request_id primary key) should updated in database field is_approved , should change 'pending' 'approved' is_approved field has 2 enum: pending , approved. how can this?

<form action = "admin.php" method = "post">  <input type="button" name="accept" value="accept" /> <input type="hidden" name="submitted" value="true" />     </form> 

php code:

if(!empty($_post['accept'])) {     $request_id = $_post['request_id'];      foreach($request_id $is_approved) {      $query = mysql_query("update request set is_approved = 'approved' is_approved =$request_id");     } } 

change form as:

<form action = "admin.php" method = "post">  <input type="button" name="accept" value="accept" /> <input type="text" name="request_id[]" value=1/> <input type="text" name="request_id[]" value=2/> <input type="hidden" name="submitted" value="true" />     </form> 

the value should actual request_id