How to web scrape with php and [duplicate]

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• How can I make PHP display the error instead of giving me 500 Internal Server Error [duplicate] 7 answers

i am trying to web scrape this site and get to connect it but my server return this error

(ip )is currently unable to handle this request. HTTP ERROR 500

my code is;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://suumo.jp/chintai/osaka/ek_05680/");
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$html  = curl_exec($ch);
curl_close($ch);

$DOM new DOMDocument;
libxml_use_internal_errors(true);
$DOM->loadHTML($html);

$elements = $DOM->getElementByTagClass("cassette-price-accent");

echo $elements->item($i)->nodeValue."<br>";

Do I something wrong?

thanks for helps