php how to GET request curl code example

Example 1: http post request php curl

$post = [
   'teste' => $_POST['teste']
];
httpPost('url.com', $post);
// function
function httpPost($url, $data)
{
   	$curl = curl_init($url);
    curl_setopt($curl, CURLOPT_POST, true);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($curl);
    curl_close($curl);
    return $response;
}

Example 2: curl php

// Initialize Curl 
 $curl = curl_init();
 curl_setopt($curl, CURLOPT_URL, "https://coinmarketcap.com/"); // set live website where data from
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); // default
 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // default
 $content = curl_exec($curl);

 preg_match_all('!<p color="text3" class="sc-AxhUy bzeXdk coin-item-symbol" font-size="1">(.*?)</p>!', $content, $matches);

 var_dump($matches);