[RESOLVED] help with Array

ca87

Hi all, i have an array that contians multiple array just like this when printed out

I have an id and i want to output a "filename" from the array if the id matches the id of the filename.

bradgrafelman

What have you tried?

The basic idea would be to use a [man]foreach/man loop to loop through the outer array and check each element to see if the id matches the id you're searching for. If it doesn't, continue looping. If it does, return the filename and stop looping.

ca87

bradgrafelman;10971062 wrote:
What have you tried?

The basic idea would be to use a [man]foreach/man loop to loop through the outer array and check each element to see if the id matches the id you're searching for. If it doesn't, continue looping. If it does, return the filename and stop looping.

Thanks! thats a very fast response. I am not quite sure if that iwill work but i will try? i want to look for four id's at once and output the corresponding files of each id how do i do this.

bradgrafelman

Best way to learn, IMHO, is to try and accomplish a small task on your own and see what you come up with. If it doesn't work (or you get stuck), post what code you came up with and we can help you tweak it/fix the errors.

ca87

bradgrafelman;10971064 wrote:
Best way to learn, IMHO, is to try and accomplish a small task on your own and see what you come up with. If it doesn't work (or you get stuck), post what code you came up with and we can help you tweak it/fix the errors.

You'r right. here is my code and its not bring out anything

 $snd_welcome_value ='';
    $ks =0;
    foreach($general_data as $key => $value){
        if($snd_welcome_key == $key){
            $ks =$key;
            $snd_welcome_value = $value;
        }
    }

bradgrafelman

Look at your array structure above again. In that foreach() loop, $key will be the numerical indexes [0..34] of the sub-arrays in the outer array. $value will be those sub-arrays themselves.

In other words, $value['id'] is the 'id' value you're wanting to search.

ca87

bradgrafelman;10971066 wrote:
Look at your array structure above again. In that foreach() loop, $key will be the numerical indexes [0..34] of the sub-arrays in the outer array. $value will be those sub-arrays themselves.

In other words, $value['id'] is the 'id' value you're wanting to search.

ha! silly me! ythanks. let me try?

ca87

bradgrafelman;10971066 wrote:
Look at your array structure above again. In that foreach() loop, $key will be the numerical indexes [0..34] of the sub-arrays in the outer array. $value will be those sub-arrays themselves.

In other words, $value['id'] is the 'id' value you're wanting to search.

Got it!

foreach($general_data as $key => $value){
        if($value['id']==$snd_welcome_key){
            $ks =$value['id'];
            $snd_welcome_value = $value['filename'];
        }
    }

THANK YOU! u'r the best teacher!.

bradgrafelman

Note you could also make it re-usable and wrap it in a function to search similarly-structured arrays, e.g.:

function array_multi_search($array, $target_key, $search_key, $search_value) {
  foreach($array as $subarray)
    if($subarray[$search_key] == $search_value)
      return $subarray[$target_key];

  return FALSE; // false indicates search value wasn't found
}

Don't forget to mark this thread resolved (if it is) using the link on the Thread Tools menu above.

ca87

bradgrafelman;10971069 wrote:
Note you could also make it re-usable and wrap it in a function to search similarly-structured arrays, e.g.:
function array_multi_search($array, $target_key, $search_key, $search_value) {
  foreach($array as $subarray)
    if($subarray[$search_key] == $search_value)
      return $subarray[$target_key];

  return FALSE; // false indicates search value wasn't found
}
Don't forget to mark this thread resolved (if it is) using the link on the Thread Tools menu above.

what a great help! thank you. yes, i will put a mark on it.