PHP

CURL PHP POST

<?php

$post = [
    'username' => 'user1',
    'password' => 'passuser1',
    'gender'   => 1,
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.domain.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post));
$response = curl_exec($ch);
var_export($response);

php curl post

// 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);

php curl

function curl( string $url, array $data)
{
	function send($url, $request)
	{
		$ch = curl_init();
		$headers = [
			'Accept: application/json',
			'Content-Type: application/json',
		];
		$options = [
			CURLOPT_URL => $url,
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => $request,
			CURLOPT_FOLLOWLOCATION => true,
			CURLOPT_RETURNTRANSFER => true,
			CURLOPT_HEADER => true,
			CURLOPT_HTTPHEADER => $headers,
		];

		curl_setopt_array($ch, $options);
		$response = curl_exec($ch);
		curl_close($ch);
		
		return $response;
	}

	return send($url, json_encode($data));
}

curl in php

$url="http://abc/api/xyz.php";  //url of 2nd website where data is to be send
$postdata = $data
$ch = curl_init(); 
curl_setopt ($ch, CURLOPT_URL, $url); 
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0)
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0); 
curl_setopt ($ch, CURLOPT_POST, 1); 
curl_setopt ($ch, CURLOPT_TIMEOUT, 60); 
curl_setopt ($ch, CURLOPT_POSTFIELDS, $postdata);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_HTTPHEADER, array('Content-Type', 'application/json'));
$result = curl_exec ($ch); 

echo $result;  
curl_close($ch);

php curl example

$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

curl php

// Initialize Curl 
 $curl = curl_init();
 curl_setopt($curl, CURLOPT_URL, "https://coinmarketcap.com/"); // set live website where data from
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); // default
 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // default
 $content = curl_exec($curl);

 preg_match_all('!<p color="text3" class="sc-AxhUy bzeXdk coin-item-symbol" font-size="1">(.*?)</p>!', $content, $matches);

 var_dump($matches);

php curl

<?php
// create a new cURL resource
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
curl_exec($ch);

// close cURL resource, and free up system resources
curl_close($ch);
?>

simple php curl

<?php
 
// From URL to get webpage contents
$url = "https://www.geeksforgeeks.org/";
 
// Initialize a CURL session.
$ch = curl_init();
 
// Return Page contents.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 
// Grab URL and pass it to the variable
curl_setopt($ch, CURLOPT_URL, $url);
 
$result = curl_exec($ch);
 
echo $result;
 
?>

PHP cURL request

function &web_curl_http($url) 
{  
   $c = curl_init();
   curl_setopt( $c , CURLOPT_URL , $url);
   curl_setopt( $c , CURLOPT_USERAGENT, "Mozilla/5.0 (Linux Centos 7;) Chrome/74.0.3729.169 Safari/537.36");
   curl_setopt( $c , CURLOPT_RETURNTRANSFER, true);
   curl_setopt( $c , CURLOPT_SSL_VERIFYPEER, false);
   curl_setopt( $c , CURLOPT_SSL_VERIFYHOST, false);
   curl_setopt( $c , CURLOPT_TIMEOUT, 10000); // 10 sec
   $data = curl_exec($c);
   curl_close($c);
   return $data;
}

PHP-Curl

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
$result = curl_exec($ch);
curl_close($ch);
//check the result
var_dump($result);

php curl request

$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);

Php CURL

$ch = curl_init('http://example.com/image.php');
$fp = fopen('/my/folder/flower.gif', 'wb');
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
fclose($fp);

php use curl

It is important to notice that when using curl to post form data and you use an array for CURLOPT_POSTFIELDS option, the post will be in multipart format

<?php
$params=['name'=>'John', 'surname'=>'Doe', 'age'=>36)
$defaults = array(
CURLOPT_URL => 'http://myremoteservice/', 
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $params,
);
$ch = curl_init();
curl_setopt_array($ch, ($options + $defaults));
?>
This produce the following post header:

--------------------------fd1c4191862e3566
Content-Disposition: form-data; name="name"

Jhon
--------------------------fd1c4191862e3566
Content-Disposition: form-data; name="surnname"

Doe
--------------------------fd1c4191862e3566
Content-Disposition: form-data; name="age"

36
--------------------------fd1c4191862e3566--

Setting CURLOPT_POSTFIELDS as follow produce a standard post header

CURLOPT_POSTFIELDS => http_build_query($params),

Which is:
name=John&surname=Doe&age=36

This caused me 2 days of debug while interacting with a java service which was sensible to this difference, while the equivalent one in php got both format without problem.

API call in PHP using cURL

// Method: POST, PUT, GET etc
// Data: array("param" => "value") ==> index.php?param=value

function CallAPI($method, $url, $data = false)
{
    $curl = curl_init();

    switch ($method)
    {
        case "POST":
            curl_setopt($curl, CURLOPT_POST, 1);

            if ($data)
                curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
            break;
        case "PUT":
            curl_setopt($curl, CURLOPT_PUT, 1);
            break;
        default:
            if ($data)
                $url = sprintf("%s?%s", $url, http_build_query($data));
    }

    // Optional Authentication:
    curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
    curl_setopt($curl, CURLOPT_USERPWD, "username:password");

    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

    $result = curl_exec($curl);

    curl_close($curl);

    return $result;
}

php curl

$data = json_encode(array(
    "ShortCode" => "600981",
    "ResponseType" => "Completed",
    "ConfirmationURL" => "https://mydomainx.com/confirmation",
    "ValidationURL" => "https://mydomainx.com/validation",
));

curl_setopt($ch, CURLOPT_POSTFIELDS, $data);