php curl example

// set post fields
$post = [
    'username' => 'user1',
    'password' => 'passuser1',
    'gender'   => 1,
];

$ch = curl_init('http://www.example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

// execute!
$response = curl_exec($ch);

// close the connection, release resources used
curl_close($ch);

// do anything you want with your response
var_dump($response);

$ch = curl_init();
$curlConfig = array(
    CURLOPT_URL            => "http://www.example.com/yourscript.php",
    CURLOPT_POST           => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POSTFIELDS     => array(
        'field1' => 'some date',
        'field2' => 'some other data',
    )
);
curl_setopt_array($ch, $curlConfig);
$result = curl_exec($ch);
curl_close($ch);

// result sent by the remote server is in $result

// 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);

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
$result = curl_exec($ch);
curl_close($ch);
//check the result
var_dump($result);