Envato API - Verify Purchase

<?php function envato_verify_purchase($purchase_code)
{
    //SETUP THE API DATA

    $username = ''; 
    $api_key = '';

    //CHECK IF THE CALL FOR THE FUNCTION WAS EMPTY
    if ( $purchase_code != '' ):

        /*
            STEPS IN THE CODE BELOW:
             - QUERY ENVATO API FOR JSON RESULT
             - DECODE THE RESULT AND TRANSFORM IT FROM OBJECTS TO AN ARRAY
             - CHECK IF THERE IS A ITEM TITLE == THE PURCHASE WAS MADE OR NOT
        */            

        $result_from_json = file_get_contents('http://marketplace.envato.com/api/edge/'.$username.'/'.$api_key.'/verify-purchase:'.$purchase_code.'.json');
        $result = json_decode($result_from_json, true);

        if ( $result['verify-purchase']['item_name'] ) :
            return 1;
        else:
            return 0;
        endif;
    endif;        
}
?>

Hey thanks man.

This code may fail if they have purchased more than 1 license of the item.

It may also fail because it doesn’t check exactly which item the user has purchased from you. Only that the user has made a purchase from you.

Also file_get_contents on a url may not work on a lot of hosting accounts. Suggest using curl. Possibly try something like this:

$result = false; // have we got a valid purchase code?
$our_item_id = 149180; // check if they've bought this item id.
$username = 'dtbaker'; // authors username
$api_key = 'gphyrdsomething'; // api key from my account area
$url = "http://marketplace.envato.com/api/edge/$username/$api_key/verify-purchase:$code.json";
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
$json_res = curl_exec($ch);
$data = json_decode($json_res,true);
$purchases = $data['verify-purchase'];
if(isset($purchases['buyer'])){
   // format single purchases same as multi purchases
   $purchases=array($purchases); 
}
$purchase_details = array();
foreach($purchases as $purchase){
    $purchase=(array)$purchase; // json issues
    if((int)$purchase['item_id']==(int)$our_item_id){
        // we have a winner!
        $result = true;
        $purchase_details = $purchase;
    }
}
// do something with the users purchase details, 
// eg: check which license they've bought, save their username something
if($result){
echo 'user has bought our item';
print_r($purchase_details);
}else{
echo 'invalid purchase code';
}

FYI here’s an example reply from the API :

{"verify-purchase":{"buyer":"buyer_id_here","created_at":"Wed Dec 01 05:00:47 +1100 2010","licence":"Regular Licence","item_name":"Your Item Name Here","item_id":"116430"}}

how to implement this into a registration page?

Hi! thanks to @duotive and @dtbaker for the explanation. My WP theme still in progress and I have a plan to make the Purchase Code as option to enable the updater (Product Serial Number likes).

Some of Themeforest authors give a notification about their purchased theme/plugin(s) have an update from WP dashboard than the buyer have to go to the theme/plugin themeforest page to get the new file(s). Cause of that, I got an idea to make a “setup installation” after theme/plugin activated, than the user must input their Purchase Code > click the Finish button and after that buyer can get the updated files directly on their WP dashbord or Theme option as well.

My question is. can I use the Purchase Code as Product Serial Number likes? I wonder what I can do with this function, may be integrating the supports directly from WP dashboard and much more

Hi. That is kinda useless now. Study this: https://github.com/JeffreyWay/Envato-Marketplace-API-Wrapper-in-PHP – this is what all of us are using.

thanks for the repo, i’m already on it

um, can you give me your consideration about my idea?

thanks and regard

You’re welcome. I tried to think about that too, but did not do that because of bad ratings that will come with it, because customers will not know how to use it.

The timing for something like this couldn’t be better. I was just wondering how to do this very thing. I am looking into using another tutorial on tuts plus to make a custom logon to my site

I wanted to grab the purchase code and or the persons username for themeforest and have the system check to see if they are a buyer. This would make a fantastic plugin for one of you guys smart enough to code it. I would buy that.