Fix PHP PayPal Gateway Integration Issue

Job ID: 37697164

Budget: $250 – $750 USD

I'm struggling with an issue related to my PayPal payment gateway. Upon initiating the payment process in PHP, my system encounters an unexpected crash. Here's what I need:

- An expert in PHP, with a good knowledge of PayPal's payment gateway to deep dive and investigate why this problem is cropping up.
- Experience of diagnosing, troubleshooting and fixing such integration issues is a must.
- You need to pinpoint the reason behind the system crash during the gateway initiation process.
- Propose a robust solution to rectify it, ensuring smooth and error-free transactions henceforth.

Strong problem-solving abilities, past exposure to similar issues and a methodical approach to debugging would be ideal for this job.
Related categories: PHP WordPress Software Architecture PayPal API MySQL