Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

• array : s_form_field
• collect_garbage : s_session_handler
• content_type : s_form_field
• data : s_form_field , s_serialized , s_form_field
• envp : s_cgi_context
• file_name : s_form_field
• is_array : s_form_field
• is_fcgi : s_cgi_context
• is_file : s_form_field
• length : s_form_field
• load_var : s_session_handler
• name : s_form_field , s_http_header , s_serialized
• next : s_http_header , s_serialized
• ob_buffer : s_cgi_context
• ob_content_length : s_cgi_context
• out : s_cgi_context
• save_var : s_session_handler
• size : s_serialized
• stream_clean : s_session_handler
• stream_close : s_session_handler
• stream_destroy : s_session_handler
• stream_exists : s_session_handler
• stream_open : s_session_handler
• value : s_http_header