HTTP post by CURL - PHP

Question

I am trying to send HTTP data with CURL in PHP file , the code not send the data.

$url= 'http://www.example.com/test.php?' ;
$msg= 'p1=1234&p2=1234&p3=1234' ;

    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL,$url);
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $msg);

    curl_exec ($curl);
    curl_close ($curl);

Answer 1

You need to send post fields as an array, not as a 'GET' request string:

$msg = [
 'p1' => '1234',
 'p2' => '1234',
 'p3' => '1234',
];

If you want to send this as a one message you can send an array with one value:

$msg = ['msg' => 'some_message'];

If you want to send GET request, append your query string to the URL:

curl_setopt($curl, CURLOPT_URL, $url.$msg);

---

In the future you can get debugging info by using this code:

$result = curl_exec($curl);
echo 'curl_error: ';
var_dump(curl_error($curl));
echo '<br /><br /> curl_result: ';
var_dump($result);
curl_close($curl);

Answer 2

Please can you try the code below ?

$requestBody can be an array, querystring, json or else according to your request headers and the request handler which will recieve your http request.

contents of the test-curl.php:

<?PHP
error_reporting();
ini_set('display_errors', 'On');

function makeRequest($url, $requestBody)
{
    $handle = curl_init();
    $headers = array(); //array of request headers
    //Example headers for standart browser request
    //$headers = array(
    //   'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8');

    curl_setopt($handle, CURLOPT_URL, $url);
    curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($handle, CURLOPT_POST, 1);
    curl_setopt($handle, CURLOPT_POSTFIELDS, $requestBody);
    curl_setopt($handle, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($handle, CURLOPT_HEADER, 1); //This means include headers in response

    $result = curl_exec($handle);
    $header_size = curl_getinfo($handle, CURLINFO_HEADER_SIZE);
    $responseHeaders = substr($result, 0, $header_size);
    $responseBody = substr($result, $header_size, strlen($result) - $header_size);
    $httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
    if ($httpCode == 200)
        return $responseBody;
    else
        throw new Exception($responseBody);
}

$method = $_SERVER["REQUEST_METHOD"];

if ($method == "GET") {

    $request = array();
    $request["a"] = "1";
    $request["b"] = "3";
    $request["c"] = "4";
    $request["d"] = "7";
    //$request = "a=1&b=3&c=4&d=7"; //This is the same with array version for standart post request.
    $response = makeRequest("http://localhost/test-curl.php", $request);
    echo $response;
} else {
    print_r($_POST);
}
?>

If you run your test-curl.php with http://localhost/test-curl.php url it will make a post request to itself and you will see the print_r output of $_POST array. Something like below;

Array ( [a] => 1 [b] => 3 [c] => 4 [d] => 7 )

Hope this helps you.