Re: Array Search Not Working?

Alice Wei wrote:
> 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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> http://clk.atdmt.com/GBL/go/201469230/direct/01/

It's not clear what you are doing, but here is the problem that you are
asking about.  array_combine() builds an array using the values from
$from as the keys of the new array and the values from change as the
values of the new array.

So here, if $locations2 is a value in the $from array:
if(in_array($location2, $from)) {

But here you are searching the values of $new_array which are copies of
the values from $to.
$key= array_search($location2,$new_array);


-- 
Thanks!
-Shawn
http://www.spidean.com