http post request php curl

// 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);

curl -d "user=user1&pass=abcd" -X POST https://example.com/login

$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;
}

curl -d '{"key1":"value1", "key2":"value2"}' -H "Content-Type: application/json" -X POST http://localhost:3000/data

			$data = [
				'api_key' => '123456789',
				'name' => 'Emmanuel',
				'email'   => '[email protected]'
				];
			$url = 'https://mysite.com/api/subscribe';
			$ch = curl_init();
			curl_setopt($ch, CURLOPT_URL, $url);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
			$response = curl_exec($ch);
			var_export($response);