how to send post request in curl php 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 POST - PHP

$post_data_arr = [
      'f_name' => 'First',
      'l_name' => 'Last',
    ]; 
    
    $url = 'http://example.com';
    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_POST, true);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data_arr);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($curl);
    curl_close($curl);
    print_r($response);