include "curl.php";
$res = curl::instance()->request($url, 'post', $params = array('var'=>'value'));
echo $res;

$outfile = fopen('out.txt', 'wb');
$opts = [
	'CURLOPT_FILE'=>$outfile,
	'CURLOPT_USERPWD'=> 'user:passwd',
	'CURLOPT_RETURNTRANSFER'=>1,//Not work when CURLOPT_FILE is true
];
echo curl::instance()->request('ftp://ip/a.txt', 'get', [], [], $opts);//1 when success

$fp = fopen($file = 'a.txt', 'r');
$opts = [
	CURLOPT_INFILE=>$fp,
	CURLOPT_UPLOAD=>1,
	CURLOPT_INFILESIZE=> filesize($file),
	CURLOPT_USERPWD=> 'user:passwd',
];
$ch = curl::instance()->debug();
echo $res = $ch->request($url = 'ftp://ip/data/b.txt', 'get', [], [], $opts);

include "curl.php";
$url = 'http://localhost:8000/up.php?haha=1';
//method 1: $cfile = '@img/a.png';//unsafe
//Process-oriented
$cfile = curl_file_create('img/a.png','image/jpeg','pic');
//Object-Oriented
$cfile = new CURLFile('img/a.png','image/jpeg','pic');
$res  = curl::instance()->request($url, 'file', $params= array('var'=> 'value', 'pic'=>$cfile));
var_dump($res);//Return true when success

$file = 'img/a.png';
$basename = basename($file);
$boundary = uniqid('prefix');
$header = array(
	//'Expect: 100-continue',
	'Content-Type: multipart/form-data; boundary='. $boundary,
);

$data = file_get_contents($file);
$params = [];
$params[] = implode("\r\n", array(
	"--$boundary",
	"Content-Disposition: form-data; name=\"pic\"; filename=\"a.png\"",
	"Content-Type: image/png",
	"",
	"$data",
));
$params[] = implode("\r\n", array(
	"--$boundary",
	"Content-Disposition: form-data; name=\"var\"",
	"",
	"value",
));
$params[] = "--$boundary--\r\n";//It seems unnecessary in my test. 
$url = 'http://localhost:8000/up.php';
$res = curl::instance()->request($url, 'post', implode("\r\n",$params), $header);
var_dump($res);

curl 'http://localhost:8000/up.php' -H 'Content-Type: multipart/form-data; boundary=W' -d $'--W\r\nContent-Disposition: form-data; name="pic"; filename="a.png"\r\nContent-Type: image/png\r\n\r\ndata\r\n--W\r\nContent-Disposition: form-data; name="var"\r\n\r\nvalue\r\n--W--\r\n' 
curl 'http://localhost:8000/up.php'  -F 'pic=@img/a.png'

$ch = curl::instance();
$ch->debug();
$ch->request('http://baidu.com');
var_dump($ch->getCurlCmd());

$ch->setOpts([CURLOPT_SSLVERSION => CURL_SSLVERSION_TLSv1]);

$ch->setOpts([CURLOPT_SSL_VERIFYPEER => false]);

debuging('dtrace');