php scrapping and outputting a specific value or number in a given tag

Question

so I\'m very new to php. But with some help, I\'ve figured out how to scrape a site if it has a tag identifier like h1 class=____

And even better, I\'ve figured out how

Answer 1

if you only care about that change percentage, try this and remove the whole foreach section:

$query = "//tr[@id='id-ethereum']/td[contains(@class, 'percent-24h')]";
$entries = $xpath->query($query);

echo $entries->item(0)->getAttribute('data-usd'); //-5.15

here are the rest of the columns:

$xpath = new DOMXPath($doc);

$market_cap = $xpath->query("//tr[@id='id-ethereum']/td[contains(@class, 'market-cap')]");
echo $market_cap->item(0)->getAttribute('data-usd'); //30574084827.1


$price = $xpath->query("//tr[@id='id-ethereum']/td/a[contains(@class, 'price')]");
echo $price->item(0)->getAttribute('data-usd'); //329.567

$circulating_supply = $xpath->query("//tr[@id='id-ethereum']/td/a[@data-supply]");
echo $circulating_supply->item(0)->getAttribute('data-supply'); //92770467.9991


$volume = $xpath->query("//tr[@id='id-ethereum']/td/a[contains(@class, 'volume')]");
echo $volume->item(0)->getAttribute('data-usd'); //810454000.0


$percent_change = $xpath->query("//tr[@id='id-ethereum']/td[contains(@class, 'percent-24h')]");
echo $percent_change->item(0)->getAttribute('data-usd'); //-3.79