how to hit api using curl in caekphp code example

Example 1: create curl api request php with para

// create & initialize a curl session
$curl = curl_init();

// set our url with curl_setopt()
curl_setopt($curl, CURLOPT_URL, "api.example.com");

// return the transfer as a string, also with setopt()
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

// curl_exec() executes the started curl session
// $output contains the output string
$output = curl_exec($curl);

// close curl resource to free up system resources
// (deletes the variable made by curl_init)
curl_close($curl);

Example 2: create curl api request php with para

$data_array =  array(
      "customer"        => $user['User']['customer_id'],
      "payment"         => array(
            "number"         => $this->request->data['account'],
            "routing"        => $this->request->data['routing'],
            "method"         => $this->request->data['method']
      ),
);
$make_call = callAPI('POST', 'https://api.example.com/post_url/', json_encode($data_array));
$response = json_decode($make_call, true);
$errors   = $response['response']['errors'];
$data     = $response['response']['data'][0];