<?php
$data = array(
     'format' => "JSON",
     'apikey' => "TestTestTestTestTestTestTestTestTestTest",
     'title' => "Mr",
     'addrline1' => "ATTN Mr John Doe",
     'addrline2' => "ACME Ltd",
     'sedamo' => "ABCDEFGH",
     'flagairmail'  => 1,
     'flagregistered'  => 0
);
 
$url = "https://api.sedamo.info/2.0/job/retrieve?" . http_build_query($data);
$json = file_get_contents($url);
$json_array = json_decode($json, true);  // 2nd parameter "true": returns result as an array 
var_dump($json_array);  // shows array