HTTP POST JSON Data using PHP Curl (Login API)

kkk_login_snippet.php

<?php

#FIXME: Hardcoded url
$url = 'http://kantokras.ph/api/account/login/';

#Assumption: The params below have already been verified.
$topup_data = array("appCode"       => "KantoKrasKing",
                    "msisdn"        => "639178680114",
                    "password"      => "abc123");

#JSON encode the params
$topup_str   = json_encode($topup_data);

#Curl init
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json',
        'Content-Length: '.strlen($topup_str)
    )
);  

curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $topup_str);
$result = curl_exec($ch);

#Ensure to close curl
curl_close($ch);

#For verbosity
print_r($result);

?>