Extrai do HTML um JSON com as taxas de anúncios do MercadoLivre por Categoria

meli_categories_taxes.php

<?php

$html = file('https://www.mercadolivre.com.br/landing/costos-venta-producto');
$find = 'window.__PRELOADED_STATE__ = ';
$json = false;
foreach($html as $row) {
    $row = trim($row);
    $pos = strpos($row, $find);
    if($pos !== false) {
        $json = @json_decode(substr($row, $pos+strlen($find), -1));
        break;
    }
}

if(!$json || empty($json->ML->categoriesFromFile)) {
    die("ERRO: json nao encontrado no HTML");
}

$data = $json->ML->categoriesFromFile;

print "category_id;classico;premium;domain;descricao\n";
foreach($data as $row) {
    if(!isset($row->Clasica) || !isset($row->Premium)) {
        continue;
    }
    $categories = array();
    $last = false;
    for($i = 1; $i <= 7; $i++) {
        $ln = 'L'.$i;
        $ls = $ln.'_N';
        if(isset($row->$ln)) {
            $categories[] = $row->$ls;
            $last = $row->$ln;
        } else {
            break;
        }
    }
    if($last) {
        printf("MLB%d;%.2f;%.2f;\"%s\";\"%s\"\n", $last, str_replace(',', '.', $row->Clasica), str_replace(',', '.', $row->Premium), $row->Domain, join('|',$categories));
    }
}

?>