<?php
    $player = array("Alan", "Bill", "Colin", "Dave", "Bill", "Bill", "Colin", "Colin", "Dave");
    $playerLen = count($player);
    $score = array(1,2,3,4,5,6,7,8,9);
    $scoreLen = count($score);
    $uniqPlayerAr = array();
    $highScoreAr = array();
    $i=0;
    for ($i = 0; $i <$playerLen; $i++) {
        $highScore=0;
        $playerName = $player[$i];
        $thisScore = $score[$i];
        if($thisScore>$highScore){
            $highScore = $thisScore;
        }
        if(in_array($playerName, $uniqPlayerAr, true)){
            array_push($highScoreAr, $highScore);
        }else{
            array_push($uniqPlayerAr, $playerName);
            array_push($highScoreAr, $highScore);
        }
    }
    $uniqPlayerArLen = count($uniqPlayerAr);
    echo "<br>there are ".$uniqPlayerArLen." uniq Players and ".$scoreLen." scores<br>";
    $i = 0;
    for ($i = 0; $i <$uniqPlayerArLen; $i++) {
        echo "highScore  for ".$uniqPlayerAr[$i]." = ".$highScoreAr[$i]."<br>";
    }
?>