Optimize PHP output buffering definition

templates/php_pool.conf

@@ -53,4 +53,10 @@ php_admin_value[memory_limit] = {{ item.jail.php_memory_limit|default(php_memory
 php_admin_value[post_max_size] = {{ item.jail.php_post_max_size|default(php_post_max_size) }}
 php_admin_value[upload_max_filesize] = {{ item.jail.php_upload_max_filesize|default(php_upload_max_filesize) }}
 
-php_flag[output_buffering] = {{ item.jail.php_output_buffering|default('On') }}
+{% if item.jail.php_output_buffering is defined %}
+{% if item.jail.php_output_buffering in ['On','Off'] %}
+php_flag[output_buffering] = {{ item.jail.php_output_buffering }}
+{% else %}
+php_admin_value[output_buffering] = {{ item.jail.php_output_buffering }}
+{% endif %}
+{% endif %}