Large file DESC iteration

print-log-desc.php

<?php

declare(strict_types=1);

$file = fopen(__DIR__  . "/var/log/system.log", "r");

$lineBuffer = '';
for($characterPosition = 0; fseek($file, $characterPosition, SEEK_END) !== -1; $characterPosition--) {
    $char = fgetc($file);
    if ($char === PHP_EOL) {
        echo $lineBuffer;

        $lineBuffer = '';
    }

    $lineBuffer = $char . $lineBuffer;
}

fclose($file);