If you use Cloudflare or a proxy, they may have their own timeout limits (usually 100 seconds) that are independent of your server.
The "PHP Download Network Error" is a common frustration for developers and users alike. It typically occurs when a server-side script fails to deliver a file correctly, causing the browser to lose the connection and display a generic "Failed - Network Error" message. Common Causes of the PHP Download Network Error php download network error
For high-performance needs, use the X-Sendfile module (Apache) or X-Accel-Redirect (Nginx). This allows PHP to handle the authentication/logic and then tell the web server to take over the actual file delivery, which is far more efficient than streaming through PHP. Troubleshooting Checklist If you use Cloudflare or a proxy, they
PHP has a default maximum execution time (often 30 or 60 seconds). For large files, the script may time out before the download completes, leading the server to terminate the connection abruptly. Common Causes of the PHP Download Network Error
Adjust send_timeout and keepalive_timeout in your Nginx configuration to a higher value like 600. 2. Implement Chunked Streaming
A missing or incorrect Content-Length header can prevent the browser from knowing how much data to expect, causing it to fail when the stream ends unexpectedly. How to Fix the Error: Best Practices