Array Search Not Working?

Hi,

  I have two arrays here that I have combined into a new array, as shown here:

$from = explode("-", $from);
$change = explode("-",$change);
$new_array = array_combine($from,$change);

I then tried reading it from a file and do string matches, trying to find out the "key" using the array_search of the individual array elements. I seem to have no such luck, even when I copied one of the elements after I do a print_r($new_array); 

Here is the code,

foreach ($lines2 as $line_num => $line2) { 
$style_line_num = $line_num+3;

      if(preg_match("/^style/",$line2)) {
   
            if(preg_match("/inkscape:label/",$lines2[$style_line_num])) {  
            $location = explode("=",$lines2[$style_line_num]);
            $location2 = substr($patient_location[1],1,-6);  
                 
             if(in_array($location2, $from)) {                  
             $key= array_search($location2,$new_array); //Find out the position of the index in the array        
             echo "Key " . $key . "<br>";  //This only gives me a blank space after the word Key
                 
            }     

         } //end preg_match inkscape           
   }  //If preg_match style

I looked at the example from http://php.net/manual/en/function.array-search.php, and looks like what I am trying to do here is possible, and yet, why am I not getting a proper key return?

Thanks for your help.

Alice
 		 	   		  
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