Add PHP FPM configuration comments

template.env

@@ -178,21 +178,36 @@ SYNCSERVERS_1_PULL_RULES=
 # FASTCGI_SEND_TIMEOUT=300s
 # FASTCGI_CONNECT_TIMEOUT=300s
 
-# PHP fpm configuration
+# PHP FPM Configuration
+
+## Basic PHP Settings
+# Maximum memory a PHP script can use.
 # PHP_MEMORY_LIMIT=2048M
+# Maximum execution time for a PHP script in seconds.
 # PHP_MAX_EXECUTION_TIME=300
+# Maximum file upload size for PHP scripts.
 # PHP_UPLOAD_MAX_FILESIZE=50M
+# Maximum size for POST data sent to PHP.
 # PHP_POST_MAX_SIZE=50M
+# Maximum time PHP spends parsing input data in seconds.
 # PHP_MAX_INPUT_TIME=300
 
-# Additional PHP settings
+## Additional PHP Settings
+# Timeout (in minutes) for user session inactivity.
 # PHP_TIMEOUT=60
+# Session cookie validity period in minutes.
 # PHP_COOKIE_TIMEOUT=10080
+# Default PHP configurations.
 # PHP_DEFAULTS=php
+# Automatically regenerate session ID on each request.
 # PHP_AUTO_REGENERATE=false
+# Check user agent on each request for security.
 # PHP_CHECK_AGENT=false
+# Only send session cookies over HTTPS.
 # PHP_COOKIE_SECURE=true
+# Domain for session cookie validity (leave empty for current domain).
 # PHP_COOKIE_DOMAIN=
+# SameSite policy for cookies ("Lax" allows top-level navigation).
 # PHP_COOKIE_SAMESITE=Lax
 
 # MariaSQL/MySQL (InnoDB) configuration