verifypaystack.php

<?php

function verify($reference) { 
        $result = array();
        //The parameter after verify/ is the transaction reference to be verified
        //you have to get reference from callback url if you are using paystack standard
        $url = 'https://api.paystack.co/transaction/verify/'. $reference;
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt(
        $ch, CURLOPT_HTTPHEADER, [
            'Authorization: Bearer '. env('PAYSTACK_SECRET_KEY')]
        );
        $request = curl_exec($ch);
        if(curl_error($ch)){
        echo 'error:' . curl_error($ch);
        }
        curl_close($ch);
        if ($request) {
        $result = json_decode($request, true);
        }
        if (array_key_exists('data', $result) && array_key_exists('status', $result['data']) && ($result['data']['status'] === 'success')) {
           
           //transaction was successful
           
           $paid_amount = $result['data']['amount'] / 100;
           
            return response()->json($result['data']);
        
           
        }else{
                
                //we could not verify this transaction
            return response()->json([
                'message' => 'Transaction was unsuccessful',
                'success' => false
            ], 401);
        }
    }