Designer PDF Viewer

https://www.hackerrank.com/challenges/designer-pdf-viewer/problem

<?php

// Complete the designerPdfViewer function below.
function designerPdfViewer($h, $word) {
    $word = str_split($word);
    $height = 0;
    $wide = count($word);
    for($i=0;$i<$wide;$i++){
        $tmp = $h[(ord($word[$i])-97)];
        if( $height < $tmp ){
            $height = $tmp;
        }
    }
    
    return $height * $wide;
}

$fptr = fopen(getenv("OUTPUT_PATH"), "w");

$stdin = fopen("php://stdin", "r");

fscanf($stdin, "%[^\n]", $h_temp);

$h = array_map('intval', preg_split('/ /', $h_temp, -1, PREG_SPLIT_NO_EMPTY));

$word = '';
fscanf($stdin, "%[^\n]", $word);

$result = designerPdfViewer($h, $word);

fwrite($fptr, $result . "\n");

fclose($stdin);
fclose($fptr);

easy 레벨은 알고리즘 보다 독해가 문제인듯…