$url =  'https://txtria.com/api/getratecenter'; 
$data = array(
	'state' => 'BC',
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

{
    "success": "1",
    "data": [
        {
            "state": "BC",
            "ratecenter": "ABBOTSFORD",
            "areacodes": [
                "778"
            ],
            "available": 49
        },
        {
            "state": "BC",
            "ratecenter": "KELOWNA",
            "areacodes": [
                "778"
            ],
            "available": 22
        }
    ]
}