I have a PHP page that creates XML output from a MySQL query, when it is returning one set of records, it displays it nicely with XML formatting.

However when it returns more than one set of records, the XML formatting is dropped. But both requested record sets are returned.

I edit the database records for triggering one or more sets of records to be returned "WHERE wp\_hud\_display.user\_id = 1", each of the records when run on their own, displays clearly in XML, so it cant be some weird character in the database causing the XML formatting to be dropped.

PHP Page

```
<?php    
// create a dom document with encoding utf8 
$domtree = new DOMDocument('1.0', 'UTF-8');

//database configuration
$config['mysql_host'] = "localhost";
$config['mysql_user'] = "root";
$config['mysql_pass'] = "";
$config['db_name']    = "tasmanhud";

//connect to host
mysql_connect($config['mysql_host'],$config['mysql_user'],$config['mysql_pass']);

//select database
@mysql_select_db($config['db_name']) or die( "Unable to select database");

//select all items in table
$sql = "SELECT
  wp_hud_display.id,
  wp_hud_display.name,
  wp_hud_display.resolution,
  wp_hud_display.user_id,
  wp_hud_display.instrument_id_1,
  wp_hud_display.x_loc_1,
  wp_hud_display.y_loc_1,
  wp_hud_display.layer_1,
  wp_hud_display.instrument_id_2,
  wp_hud_display.x_loc_2,
  wp_hud_display.y_loc_2,
  wp_hud_display.layer_2,
  wp_hud_display.instrument_id_3,
  wp_hud_display.x_loc_3,
  wp_hud_display.y_loc_3,
  wp_hud_display.layer_3,
  wp_hud_display.instrument_id_4,
  wp_hud_display.x_loc_4,
  wp_hud_display.y_loc_4,
  wp_hud_display.layer_4,
  wp_hud_instrument.inst_id AS inst1_id,
  wp_hud_instrument.name AS inst1_name,
  wp_hud_instrument.image_file AS inst1_image,
  wp_hud_instrument.font_type AS inst1_ft,
  wp_hud_instrument.font_size AS inst1_fs,
  wp_hud_instrument_1.inst_id AS inst2_id,
  wp_hud_instrument_1.name AS inst2_name,
  wp_hud_instrument_1.image_file AS inst2_image,
  wp_hud_instrument_1.font_type AS inst2_ft,
  wp_hud_instrument_1.font_size AS inst2_fs,
  wp_hud_instrument_2.inst_id AS inst3_id,
  wp_hud_instrument_2.name AS inst3_name,
  wp_hud_instrument_2.image_file AS inst3_image,
  wp_hud_instrument_2.font_type AS inst3_ft,
  wp_hud_instrument_2.font_size AS inst3_fs,
  wp_hud_instrument_3.inst_id AS inst4_id,
  wp_hud_instrument_3.name AS inst4_name,
  wp_hud_instrument_3.image_file AS inst4_image,
  wp_hud_instrument_3.font_type AS inst4_ft,
  wp_hud_instrument_3.font_size AS inst4_fs
FROM wp_hud_display
  LEFT JOIN wp_hud_instrument
    ON wp_hud_display.instrument_id_1 = wp_hud_instrument.inst_id
  LEFT JOIN wp_hud_instrument wp_hud_instrument_1
    ON wp_hud_display.instrument_id_2 = wp_hud_instrument_1.inst_id
  LEFT JOIN wp_hud_instrument wp_hud_instrument_2
    ON wp_hud_display.instrument_id_3 = wp_hud_instrument_2.inst_id
  LEFT JOIN wp_hud_instrument wp_hud_instrument_3
    ON wp_hud_display.instrument_id_4 = wp_hud_instrument_3.inst_id
WHERE wp_hud_display.user_id = 1
GROUP BY wp_hud_display.id";

/* create the root element of the xml tree */
$xmlRoot = $domtree->createElement("wp_hud_displays");
/* append it to the document created */
$xmlRoot = $domtree->appendChild($xmlRoot);

$hud_display_group = $domtree->createElement("hud_display_group");
$hud_display_group = $xmlRoot->appendChild($hud_display_group);

    $result = mysql_query($sql);
    if (!$result) {
        die('Invalid query: ' . mysql_error());
    }

    if(mysql_num_rows($result)>0)
    {
       while($result_array = mysql_fetch_assoc($result))
       {
$hud_display = $domtree->createElement("hud_display");
$hud_display = $hud_display_group->appendChild($hud_display);

$instrument_id_1 = $domtree->createElement("instrument_id_1");
$instrument_id_1 = $hud_display->appendChild($instrument_id_1);

$instrument_id_2 = $domtree->createElement("instrument_id_2");
$instrument_id_2 = $hud_display->appendChild($instrument_id_2);

$instrument_id_3 = $domtree->createElement("instrument_id_3");
$instrument_id_3 = $hud_display->appendChild($instrument_id_3);

$instrument_id_4 = $domtree->createElement("instrument_id_4");
$instrument_id_4 = $hud_display->appendChild($instrument_id_4);

    /* you should enclose the following two lines in a cicle */

$hud_display->appendChild($domtree->createElement('id',$result_array['id']));
$hud_display->appendChild($domtree->createElement('name',$result_array['name']));
$hud_display->appendChild($domtree->createElement('resolution',$result_array['resolution']));
$hud_display->appendChild($domtree->createElement('user_id',$result_array['user_id']));

// Instrument 1
$hud_display->appendChild($domtree->createElement('instrument_id_1',$result_array['instrument_id_1']));
$instrument_id_1->appendChild($domtree->createElement('inst_id',$result_array['inst1_id']));
$instrument_id_1->appendChild($domtree->createElement('name',$result_array['inst1_name']));
$instrument_id_1->appendChild($domtree->createElement('image_name',$result_array['inst1_image']));
$instrument_id_1->appendChild($domtree->createElement('font_type',$result_array['inst1_ft']));  
$instrument_id_1->appendChild($domtree->createElement('font_size',$result_array['inst1_fs']));
$hud_display->appendChild($domtree->createElement('x_loc_1',$result_array['x_loc_1']));
$hud_display->appendChild($domtree->createElement('y_loc_1',$result_array['y_loc_1']));
$hud_display->appendChild($domtree->createElement('layer_1',$result_array['layer_1']));

// Instrument 2
$hud_display->appendChild($domtree->createElement('instrument_id_2',$result_array['instrument_id_2']));
$instrument_id_2->appendChild($domtree->createElement('inst_id',$result_array['inst2_id']));
$instrument_id_2->appendChild($domtree->createElement('name',$result_array['inst2_name']));
$instrument_id_2->appendChild($domtree->createElement('image_name',$result_array['inst2_image']));
$instrument_id_2->appendChild($domtree->createElement('font_type',$result_array['inst2_ft']));  
$instrument_id_2->appendChild($domtree->createElement('font_size',$result_array['inst2_fs']));
$hud_display->appendChild($domtree->createElement('x_loc_2',$result_array['x_loc_2']));
$hud_display->appendChild($domtree->createElement('y_loc_2',$result_array['y_loc_2']));
$hud_display->appendChild($domtree->createElement('layer_2',$result_array['layer_2']));

// Instrument 3 
$hud_display->appendChild($domtree->createElement('instrument_id_3',$result_array['instrument_id_3']));
    $instrument_id_3->appendChild($domtree->createElement('inst_id',$result_array['inst3_id']));       $instrument_id_3->appendChild($domtree->createElement('name',$result_array['inst3_name']));
$instrument_id_3->appendChild($domtree->createElement('image_name',$result_array['inst3_image']));
$instrument_id_3->appendChild($domtree->createElement('font_type',$result_array['inst3_ft']));  $instrument_id_3->appendChild($domtree->createElement('font_size',$result_array['inst3_fs']));
$hud_display->appendChild($domtree->createElement('x_loc_3',$result_array['x_loc_3']));
$hud_display->appendChild($domtree->createElement('y_loc_3',$result_array['y_loc_3']));
$hud_display->appendChild($domtree->createElement('layer_3',$result_array['layer_3']));

    // Instrument 4
 $hud_display->appendChild($domtree->createElement('instrument_id_4',$result_array['instrument_id_4']));
    $instrument_id_4->appendChild($domtree->createElement('inst_id',$result_array['inst4_id']));
    $instrument_id_4->appendChild($domtree->createElement('name',$result_array['inst4_name']));
    $instrument_id_4->appendChild($domtree->createElement('image_name',$result_array['inst4_image']));
    $instrument_id_4->appendChild($domtree->createElement('font_type',$result_array['inst4_ft']));  
    $instrument_id_4->appendChild($domtree->createElement('font_size',$result_array['inst4_fs'])); $hud_display->appendChild($domtree->createElement('x_loc_4',$result_array['x_loc_4']));
    $hud_display->appendChild($domtree->createElement('y_loc_4',$result_array['y_loc_4']));
    $hud_display->appendChild($domtree->createElement('layer_4',$result_array['layer_4']));

            }
        }
    // get the xml printed 

       echo $domtree->saveXML();

    //send the xml header to the browser

    header ("Content-Type:text/xml");

    ?>

```

One Record XML Output

```
<wp_hud_displays>
 <hud_display_group>
   <hud_display>
     <instrument_id_1></instrument_id_1>
     <instrument_id_2></instrument_id_2>
     <instrument_id_3></instrument_id_3>
     <instrument_id_4></instrument_id_4>
   <id>1</id>
   <name>test display</name>
   <resolution>1080p</resolution>
   <user_id>1</user_id>
   <instrument_id_1>1</instrument_id_1>
   <x_loc_1>89</x_loc_1>
   <y_loc_1>79</y_loc_1>
   <layer_1>1</layer_1>
   <instrument_id_2>2</instrument_id_2>
   <x_loc_2>988</x_loc_2>
   <y_loc_2>98</y_loc_2>
   <layer_2>1</layer_2>
   <instrument_id_3>3</instrument_id_3>
   <x_loc_3>89</x_loc_3>
   <y_loc_3>90</y_loc_3>
   <layer_3>1</layer_3>
   <instrument_id_4>4</instrument_id_4>
   <x_loc_4>67</x_loc_4>
   <y_loc_4>76</y_loc_4>
   <layer_4>1</layer_4>
  </hud_display>
 </hud_display_group>
</wp_hud_displays>

```

More than one record output

```
1test1_gauge001-2_zpsdbe86ca1f.jpg11PID_DISTANCE30100002500101223dfd34412sdf34534056Arail122test1_needle11PID_ENGINE_LOAD211000025200160112025000000002test1_needle11PID_ENGINE_LOAD211000025200160112025000000003new gaugedfsgsdfgfd435430PID_COOLANT_TEMP2434534541023324000000003new gaugedfsgsdfgfd435430PID_COOLANT_TEMP2434534541023324000000004Bla100.jpg2702334395910299000000004Bla100.jpg2702334395910299000000002test1_needle11PID_ENGINE_LOAD211000025200160112025000000001test display1080p118979129889813899014677612dsfdsfsd720p12321342323213224232123143423444342

```

Could it be something to do with the WHILE loop?, unable to create another set of "wp\_hud\_display.id" records