The Information box is displayed on both the Settings > oik trace options and Settings > oik action options admin pages.

It shows some useful information about the site.

Select the Trace 'shutdown' trace functions count checkbox to obtain a summary of the calls to bw_trace2().

Use this table to

Use the Trace 'shutdown' output buffer action to view the contents of any output buffer that hasn't been flushed by 'shutdown'.

Trace records are produced if zlib.output_compression is not set.

• Output from [api ob_get_status]
• Buffered content if there is any.
• The contents of the global variable $theme_ob_stack.

Example

Notes

• See [api bw_trace_output_buffer]

Select the Trace 'shutdown' saved queries checkbox to obtain a summary of the queries performed during the transaction.

The output is produced in two trace records.

1. The WPDB global object - providing all the details.
2. Summarised using [bw_code bw_sql] shortcodes.

Example

and

Notes

• In my experience the elapsed time of the SQL queries hardly ever reveals a performance problem with data access.
• When this option is selected the Daily Trace Summary report will show the Query time.
• See [api bw_trace_saved_queries].

Use the Trace 'shutdown' included files checkbox to obtain a report of all the PHP files loaded in the transaction.

There will be hundreds.

Use the Trace Error, Warning and Notice messages action option to find where your code causes PHP to issue Error, Warning and Notice messages.

Selecting this option causes oik-bwtrace to attach an error handler which will produce two trace records and a bw_backtrace().

The first trace record reports the message with trace level BW_TRACE_ERROR. The second reports the error context with trace level BW_TRACE_VERBOSE.

Use the Trace deprecated messages action option to find where your site uses code that has been deprecated.

Selecting this checkbox attaches a trace function to the WordPress hooks that indicate that you're using deprecated logic or otherwise doing it wrong.

When these action hook functions are invoked they each produce a BW_TRACE_ERROR message reporting the problem, followed by a [api bw_backtrace()]

When the Trace 'wp' global wp_rewrite checkbox is selected the global WP_Rewrite Object is traced.

C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(444:0) bw_trace_wp_rewrite(1) 21 0 2019-12-04T14:46:10+00:00 0.206450 0.021838 cf=wp 30 3254 6291456/6291456 256M F=556 wp_rewrite WP_Rewrite Object 
(     
[permalink_structure] => /%year%/%monthnum%/%day%/%postname%/     [use_trailing_slashes] => 1     
[author_base] => author     
[search_base] => search     
[comments_base] => comments     
[pagination_base] => page     
[comments_pagination_base] => comment-page     
[feed_base] => feed     
[front] => /     
[root] =>      
[index] => index.php     
[matches] =>      
[rules] => Array 
...

See [api bw_trace_wp_rewrite()].

When the Trace 'wp' action checkbox is selected the WP object is traced with a trace level of BW_TRACE_ALWAYS.

Four trace records are produced showing;

1. WP Object
2. Option values for show_on_front, page_on_front and page_for_posts
3. Whether or not [api is_home()] is true.
4. Whether or not [api is_front_page()] is true.

Example

C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(424:0) bw_trace_wp(1) 21 0 2019-12-04T14:21:13+00:00 0.220078 0.035864 cf=wp 30 3254 6291456/6291456 256M F=556 1 WP Object 
(     
[public_query_vars] => Array         
(             
[0] => m             
[1] => p             
[2] => posts             
[3] => w             
[4] => cat             
[5] => withcomments             
[6] => withoutcomments             
[7] => s 
...
C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(430:0) bw_trace_wp(2) 22 0 2019-12-04T14:21:13+00:00 0.220398 0.000320 cf=wp 30 3254 6291456/6291456 256M F=556 posts,0,0 show,page,posts
C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(431:0) bw_trace_wp(3) 23 0 2019-12-04T14:21:13+00:00 0.220564 0.000166 cf=wp 30 3254 6291456/6291456 256M F=556 home 1
C:\apache\htdocs\wordpress\wp-content\plugins\oik-bwtrace\includes\oik-actions.php(432:0) bw_trace_wp(4) 24 0 2019-12-04T14:21:13+00:00 0.220685 0.000121 cf=wp 30 3254 6291456/6291456 256M F=556 front 1 

See [api bw_trace_wp]