[php-src] Issue #12982: php-fpm fail to process uris above 32kb in length

Issue: https://github.com/php/php-src/issues/12982 Author: divinity76 ### Description Assuming php-fpm and nginx configured to allow large URLs ( http{ large_client_header_buffers 8 999k; ...} ) The following code: ```php <?php $url = "http://localhost/?a=" . str_repeat("a", 33*1024); $ch = curl_init($url); curl_exec($ch); ``` Resulted in ``` <html> <head><title>502 Bad Gateway</title></head> <body> <center><h1>502 Bad Gateway</h1></center> <hr><center>nginx/1.22.1</center> </body> </html> ``` and /var/log/nginx/error.log containing >2023/12/20 06:15:30 [error] 7980#7980: *32033 writev() failed (32: Broken pipe) while sending >request to upstream, client: 162.248.164.115, server: localhost, request: "GET >/?a=aaaaaaaaaa(...) and nothing in /var/log/php8.2-fpm.log But I expected... a notice in the php-fpm log that something went wrong? and maybe a HTTP 414 Request-URL too long error instead of a 502 Bad Gateway ? ### PHP Version PHP 8.2.7 ### Operating System Debian 12