
<h2>New Extension Functions</h2>

Warning, these functions are not ported to PHP yet. Do NOT use them if the code
is intended to run with PHP as well, unless guarded with function_exists()
testing and some alternative PHP implementation.

- hphp_crash_log
- hphp_stats
- hphp_get_stats
- hphp_output_global_state
- hphp_set_error_page

- hphp_thread_is_warmup_enabled
- hphp_thread_set_warmup_enabled
- hphp_get_thread_id

- hphpd_auth_token
- hphp_debug_session_auth
- hphpd_install_user_command
- hphpd_get_user_commands
- hphpd_break

- register_postsend_function

- clock_getres
- clock_gettime

- mysql_connect added connect_timeout_ms and query_timeout_ms
- mysql_pconnect added connect_timeout_ms and query_timeout_ms
- mysql_set_timeout

- fb_load_local_databases
- fb_parallel_query
- fb_crossall_query

- pagelet_server_is_enabled
- pagelet_server_task_start
- pagelet_server_task_status
- pagelet_server_task_result
- pagelet_server_flush

- xbox_send_message
- xbox_post_message
- xbox_task_start
- xbox_task_status
- xbox_task_result

- fb_serialize
- fb_unserialize
- fb_intercept
- fb_rename_function
- fb_get_code_coverage
- fb_utf8ize
- fb_enable_code_coverage
- fb_disable_code_coverage
- HH\disable_code_coverage_with_frequency

- xhprof_enable
- xhprof_disable
- xhprof_sample_enable
- xhprof_sample_disable

<h2>New Server Variables</h2>

$_SERVER['THREAD_TYPE'] can be:

- Web Request
- Pagelet Thread
- Xbox Thread
- RPC Thread
