16. *Points Counter

<?php
$input = explode("|", readline());
$sumValues = 0;
$matrix = [];
$sorted=[];
$maxKee[]=0;
while ($input[0] != "Result") {
    $item = [];
    foreach ($input as $item) {
        $item = preg_replace("/[^a-zA-Z0-9]+/", "", $input);
    }
    if ((ctype_upper($item[0]))) {
        $matrix[$item[0]][$item[1]] = intval($item[2]);
    } else {
        $matrix[$item[1]][$item[0]] = intval($item[2]);
    }
    $input = explode("|", readline());
}
foreach ($matrix as $key => $arr) {
    $sumValues = 0;
    $maxKey = 0;
    foreach ($arr as $keyArr => $valueArr) {
        $sumValues += $valueArr;
        $sorted[$key]=$sumValues;
        if ($valueArr>$maxKey){
            $maxKey=$valueArr;
        }
        $keyR = array_search($maxKey, $arr);
        $maxKee[$key]=$keyR;
    }
}
arsort($sorted);
foreach ($sorted as $key=>$value){
    echo "$key" . " => " . $value . PHP_EOL;
    echo "Most points scored by ".$maxKee[$key] . PHP_EOL;
}