Parse through Chomicron page for comic book sales figures

comichron_sales_parse.php

<?php
system("clear");
$data = file_get_contents("http://www.comichron.com/monthlycomicssales/2014/2014-04.html");
$dom = new domDocument;

@$dom->loadHTML($data);
$dom->preserveWhiteSpace = false;
$tables = $dom->getElementsByTagName("table");

// Find the largest table to isolate the table we want to work with
$top_row_count = 0;
foreach($tables as $table) {
    $rows = $table->getElementsByTagName("tr");
    if($rows->length > $top_row_count) {
        $top_row_count = $rows->length;
        $data_rows = $rows;
    }
}

foreach($data_rows as $data_row) {
    $cols = $data_row->getElementsByTagName("td");

    $rank        = $cols->item(0)->nodeValue;
    $title       = preg_replace("/\n/", "", $cols->item(1)->nodeValue);
    $issue_no    = $cols->item(2)->nodeValue;
    $cover_price = preg_replace("/[^0-9\.]/", "", $cols->item(3)->nodeValue);
    $publisher   = $cols->item(4)->nodeValue;
    $est_sales   = preg_replace("/\,/", "", $cols->item(5)->nodeValue);

    // Stop once we get to the trade paperbacks
    if(strtolower($title) == "trade paperback title")
        break;

    // Make sure we only work with validated rows
    if(!empty($est_sales)) {
        echo "$title #$issue_no, ranked #$rank, selling $est_sales copies at $cover_price\t($" . $est_sales * $cover_price . ")\n";
    }
}