How i get the specified array values

You can match against the patterns based on starting keys.

$array = [    ['BACK', 'PACK', 'BBP160800103', '', 'G086-1', '8#.JPG'],    ['BACKPACK', 'BBP160500010', 'G114-3#1.JPG'],    ['WSL160800024-WSL160800025', 'L83-5.JPG'],    ['IA041017', 'L83-5.JPG']];$patterns = ['(BBP\w+)', '(WSL\w+)', '(IA\w+)'];$codes = [];$matcher = '/' . implode($patterns, '|') . '/';foreach ($array as $arr) {    array_map(function ($value) use ($matcher, &$codes) {        preg_match_all($matcher, $value, $matches);        foreach($matches as $match) {            $codes = array_merge(array_filter($match), $codes);        }    }, $arr);}print_r(array_unique($codes));// outputArray(    [0] => IA041017    [2] => WSL160800024    [3] => WSL160800025    [6] => BBP160500010    [8] => BBP160800103)

Pass your final array to this function to achieve your result.

arraymakking($file);//your arrayfunction arraymakking($arr){    foreach($arr as $key=>$val){        if(strpos($val,'-') !== false){            $res=explode('-',$val);            unset($arr[$key]);        }    }    $result=array_merge($arr,$res);    return $result;}

Try this:

echo $array[0][3]; //BBP160800103echo $array[2][1]; //BBP160500010

Etc. Refer to the indexing by number. You'd be better off creating your array with named indexes. Like this:

$array = array("Array1"=>array("key1"=>"val1","key2"=>"val2"),"Array2"=>(array("2ndKey1"=>"val1", "2ndKey2"=>"val2));