Stripe downgrade-upgrade plan using API in PHP

In this post we will show you Stripe downgrade-upgrade plan, hear for Stripe downgrade-upgrade plan we will give you demo and example for implement.

Syntex for Stripe downgrade-upgrade plan

this is Syntex for Stripe downgrade-upgrade plan, you need to change subscription id and STRIPE_API_KEY and plan hear.

// curl for Stripe downgrade-upgrade plan
curl https://api.stripe.com/v1/subscriptions/sub_49ty47958G5z6a \
   -u sk_test_a12RX8g5E58fT659vg4Gd1fp: \
   -d plan=pro-monthly
   

Stripe Upgrading-Downgrading Plans

class Stripe 
{
    public $headers;
	// set url
    public $url = 'https://api.stripe.com/v1/';
	
	//all fields array
    public $fields = array();

    function __construct () 
	{
        $this->headers = array('Authorization: Bearer sk_test_STRIPE_API_KEY'); 
		// ADD HERE STRIPE_API_KEY = your application stripe api key
    }

	// PHP functions to curl call
    function call () 
	{
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HTTPHEADER, $this->headers);
        curl_setopt($ch, CURLOPT_URL, $this->url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($this->fields));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        $output = curl_exec($ch);
        curl_close($ch);

        return json_decode($output, true); // return here php array with stripe api response
    }
}

$subscription = new Stripe();
// add your subscription id hear
$subscription->url .= 'subscriptions/sub_B6N1qfu8XnGEZp'; 
// sub_B6N1qfu8XnGEZp is example
$subscription->fields['plan'] = 'your-new-plan'; 
// add your plan

$subscription_add = $subscription->call();
echo "<pre>";
print_r($subscription_add);
echo "</pre>";

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