search string in comma separated array php -

i need return array contains search string in range . want search string pakistan1 , not take above that should ignore array key 0 second string bangladesh4 should ignore other keys below 4 final return array should

array( [2]=> [3]=> [4]=> ) 

there 2 strings needs searched. how can go ?

first : pakistan2

second : bangladesh4

$input_arr= array(     0=>array(india0,srilanka1,pakistan0,banglades0),     1=>array(india1,srilanka1,pakistan1,bangladesh1),     2=>array(india2,srilanka2,pakistan2,bangladesh2),     3=>array(india3,srilanka3,pakistan3,bangladesh3),     4=>array(india 4,srilanka4,pakistan4,bangladesh4),     5=>array(india 5,srilanka5,pakistan5,bangladesh5), ); 

i want return resulting array :

$result_arr= array(     2=>array(india2,srilanka2,pakistan2,bangladesh2),     3=>array(india3,srilanka3,pakistan3,bangladesh3),     4=>array(india 4,srilanka4,pakistan4,bangladesh4) ) 

edited

$first_str = "pakistan2"; $second_str = "bangladesh4";   $arr_output = array(); foreach($input_arr $key=>$temp_arr) {      if(in_array($first_str, $temp_arr) || in_array($second_str, $temp_arr) )     {         $arr_output[$key]=$temp_arr;     } } 

not able array 3

try this

$input_arr= array(     0=>array("india0","srilanka1","pakistan0","banglades0"),     1=>array("india1","srilanka1","pakistan1","bangladesh1"),     2=>array("india2","srilanka2","pakistan2","bangladesh2"),     3=>array("india3","srilanka3","pakistan3","bangladesh3"),     4=>array("india 4","srilanka4","pakistan4","bangladesh4"),     5=>array("india 5","srilanka5","pakistan5","bangladesh5"), );  $first_str = "pakistan2"; $second_str = "bangladesh4";   $arr_output = array(); foreach($input_arr $key=>$temp_arr) {      if(in_array($first_str, $temp_arr) || in_array($second_str, $temp_arr) )     {         $arr_output[$key]=$temp_arr;     } }  print_r($arr_output);