foreach

Dear Lists -

I know I am missing something fundamental - but I have no idea where 
to start to look.

Here are code snippets:

I have truncated the allowed_fields to make it easier to debug.

  $allowed_fields = array(  'Site' =>'POST[Site]', 'MedRec' => 
'$_POST[MedRec]', 'Fname' => '$_POST[Fname]'   );
  echo "post #1\n";
  print_r($_POST);

RESPONSE:

  post #1
Array
(
     [Site] => AA
     [MedRec] => 10002
     [Fname] =>
     [Lname] =>
     [Phone] =>
     [Height] =>
     [welcome_already_seen] => already_seen
     [next_step] => step10
)



//                      $allowed_fields = array("Site", "MedRec", 
"Fname", "Lname", // previous statement of $allowed_fields
   //                      "Phone", "Sex", "Height");



Key Site, Value POST[Site]
Key MedRec, Value $_POST[MedRec]
Key Fname, Value $_POST[Fname]



foreach ($allowed_fields as $key => $val) {
     print "Key $key, Value $val\n";
}


         if(isset($_Request['Sex'])&& trim($_POST['Sex']) != '' )
         {
                 if ($_REQUEST['Sex'] === "0")
                 {
                         $sex = 'Male';
                 }
                 else
                 {
                         $sex = 'Female';
                 }
         }
  }
                 echo "Post#2";
                 print_r($_POST);
                    if(empty($allowed_fields))
//RESPONSE

Post#2Array
(
     [Site] => AA
     [MedRec] => 10002
     [Fname] =>
     [Lname] =>
     [Phone] =>
     [Height] =>
     [welcome_already_seen] => already_seen
     [next_step] => step10
)



    {
      echo "ouch";
    }

foreach ( $allowed_fields as $key => $val ) //This is line 198
{
         if ( ! empty( $_POST['val'] ) )
         {
                 print "Key $key, Value $val\n";
                         $cxn = mysqli_connect($host,$user,$password,$db);
                 $value = mysql_real_escape_string( $_POST[$fld] );
                 $query .= " AND $fld = '$_POST[value]' ";
                echo "#1 $query"; //never echos the query
         }
}

These are the messages I receive on execution of the script:

Notice: Undefined variable: allowed_fields in 
/var/www/srchrhsptl5.php on line 198
Warning: Invalid argument supplied for foreach() in 
/var/www/srchrhsptl5.php on line 198

Advice and help, please.

Thank you.

Ethan Rosenberg




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