XPATH method for retuning multiple dynamic results from a XML file using PHP

[tony_p]

XPATH method for retuning multiple dynamic results from a XML file using PHP
I have a form that the user types or selects a value the form is as follows
<form id="search_photos" action="photo_result.php" method="get">
    <input value="" name="photographer_id" id="photographer_id"  style=" border:1px solid Silver;" type="text">
    <select name="Photographer" id="Photographer"   style="height:23px; border:1px solid Silver;">
        <option selected="selected" value="x">Any Photographer</option>
        <option value="John">John</option>
        <option value="Fred">Fred</option>
        <option value="Joseph">Joseph</option>
    </select>
    <select name="images" id="images"   style="height:23px; border:1px solid Silver;">
        <option selected="selected" value="x">All Images</option>
        <option value="0">None</option>
        <option value="a">Image a</option>
        <option value="b">Image b </option>
        <option value="c">Image c </option>
    </select>
    <input name="Submit" value="Search Now >" id="Submit" class="Adv1_Filter_Button" type="submit">
</form>

Then the search_photo.php script  that catches the result of the form and filters the values entered by the user as

follows
<?php

   $xml = simplexml_load_file("photo.xml");
   
   for ($i = 0; $i < count($xml); $i++){  
 
    if(isset($_GET["LocationName"]))
    {
        $photographer_id = $_GET["LocationName"];
    }
    $result = $xml->xpath('/root/area[photographer_id=' . $photographer_id . ']  ');
    }
        
    if(isset($_GET["Photographer"]))
    {
        $photographer = $_GET["Photographer"];
    }
        $result = $xml->xpath('/root/area[photographer_id=' . $photographer_id . ']  ');

    if(isset($_GET["images"]))
    {
        $image = $_GET["images"];
        
        
   }
        
    echo $photographer_id;
    echo $photographer;
    echo $image;
    var_dump ($result);
    
    ?>
The $result from the first XPATH pass is correct  if all that is set is ‘photographer_id’ if I then  try $result=$xml->xpath

('/root/area[photographer_id=' . $photographer_id . '] | /root/area[photographer=' . $photographer .']');  and  select

 1 and fred then I get the result of an array of all four when it should be an empty array I have trie & (and) insted of | (or) but just returns an empty array should I convert the $result to an object or is the a way of saving the $result to an xml file

 

[tony_p]

Sorry I forgot to add the XML content

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <area>
        <photographer_id>1</photographer_id>
        <photographer>John</photographer>
        <image>a</image>
    </area>
     <area>
        <photographer_id>1</photographer_id>
        <photographer>John</photographer>
        <image>b</image>
    </area>
     <area>
        <photographer_id>1</photographer_id>
        <photographer>John</photographer>
        <image>c</image>
    </area>
     <area>
        <photographer_id>2</photographer_id>
        <photographer>Fred</photographer>
        <image>a</image>
    </area>
</root>