<?php
$url="http://smslane.com/vendorsms/pushsms.aspx?user=abc&password=xyz&msisdn=919898123456&sid=WebSMS&msg=Test message from SMSLane&fl=0";
$ch = curl_init();
curl_setopt( $ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1" );
curl_setopt( $ch, CURLOPT_URL, $url );
$content = curl_exec( $ch );
$response = curl_getinfo( $ch );
curl_close ( $ch );
echo $content;
?>

<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL,
    'http://your_server/response.php?foo=yes we can&baz=foo bar'
);
$content = curl_exec($ch);
echo $content;

<?php
print_r($_GET);

Array
(
    [foo] => yes
)

echo http_build_query(array(
    'user'=>'abc',
    'password'=>'xyz',
    'msisdn'=>'1234',
    'sid'=>'WebSMS',
    'msg'=>'Test message from SMSLane',
    'fl'=>0
));

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

<?php
print file_get_contents("http://some_server/some_file.php?some_args=true");
?>

<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL,'http://www.anydomain.com/anyapi.php?a=parameters');
$content = curl_exec($ch);
echo $content;
?>

$r = new HttpRequest('http://www.xencomsoftware.net/configurator/tracker/ip.php', HttpRequest::METH_GET);
try {
        $r->send();
         echo $r->getResponseCode();
         if ($r->getResponseCode() == 200)
        {
        }
    }