php curl: I need a simple post request and retrival of page example

Question

I would like to know how to send a post request in curl and get the response page.

Answer 1

  <?php
  ob_start();
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,'https://example.com/student_list.php');
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $response = curl_exec($ch);
  echo $response;
  ?>

Answer 2

You need to set the request to post using CURLOPT_POST and if you want to pass data with it, use CURLOPT_POSTFIELDS:

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);

$data = array(
    'username' => 'foo',
    'password' => 'bar'
);

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

$contents = curl_exec($ch);

curl_close($ch);

Answer 3

I think you need to add

curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $postFields);

Answer 4

What about something like this :

$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

For a list of options that can be used with curl, you can take a look at the page of curl_setopt.

Here, you'll have to use, at least :

• CURLOPT_POST : as you want to send a POST request, and not a GET
• CURLOPT_RETURNTRANSFER : depending on whether you want curl_exec to return the result of the request, or to just output it.
• CURLOPT_POSTFIELDS : The data that will be posted -- can be written directly as a string, like a querystring, or using an array

And don't hesitate to read the curl section of the PHP manual ;-)

Answer 5

Using JSON DATA with CURL

client.php

    <?php 

$url="http://192.168.44.10/project/server/curl_server.php";
$data=['username'=>'abc','password'=>'123'];
$data = json_encode($data);

$ch = curl_init();
$curlConfig = array(
    CURLOPT_URL            => $url,
    CURLOPT_HTTPHEADER     => array('Content-Type: application/json'),
    CURLOPT_POST           => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POSTFIELDS     => $data
);
curl_setopt_array($ch, $curlConfig);
$result = curl_exec($ch);
curl_close($ch);
echo $result;  //here you get result like: username: abc and password: 123
?>

curl_server.php

    <?php

    $data = file_get_contents('php://input');
    $Data= json_decode($data,true);

    echo 'username: '.$Data['username']." and password: ".$Data['password'];
?>

Answer 6

$url = "http://www.example.com/";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);

$data = array(
    'username' => 'foo',
    'password' => 'bar'
);


curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
$contents = curl_exec($ch);
curl_close($ch);