The number of goals achieved by two football teams in matches in a league is given in the form of two lists. For each match of team B, compute the total number of matches of team A where team A has scored less than or equal to the number of goals team B has scored in a match

Example
TeamA = [1,2,3]   
Team B = [2,4]
team A has played 3 matches and has scored TeamA = [1,2,3] goals in each match respectively. Team B has played two matches and has scored teamB = [2,4] in each match respectively. For two goals scored by teamB in its first match team A has two matches with 1 and 2 score. For four goals scored by teamB in its second match team A has three matches with 1, 2 and 3 score.
Hence the answer is [2,3]
the main editing should be done only in the function please.
how do I go about it.

<?php  function counts($teamA, $teamB) {   } $fptr = fopen(getenv("OUTPUT_PATH"), "w");  $teamA_count = intval(trim(fgets(STDIN)));  $teamA = array();  for ($i = 0; $i < $teamA_count; $i++) {     $teamA_item = intval(trim(fgets(STDIN)));     $teamA[] = $teamA_item; }  $teamB_count = intval(trim(fgets(STDIN)));  $teamB = array();  for ($i = 0; $i < $teamB_count; $i++) {     $teamB_item = intval(trim(fgets(STDIN)));     $teamB[] = $teamB_item; }  $result = counts($teamA, $teamB);  fwrite($fptr, implode("
", $result) . "
");  fclose($fptr); 

If anything is needed let me know