kunalb

<ul>
<li>Call <code>kb_debug</code> with any arguments that you want to log and they will be pretty printed at the end of the document.</li>
<li>To log and show a list of all warnings, errors and notices generated by your plugin, add <code>?KB_Debug_Errors</code> to your URL. </li>
<li>To see a list of all hooks in the order they fire as well as what arguments they are called with and what functions run on them (again, in which order), 
add a <code>?KB_Debug_Hooks</code> to the URL.</li>
</ul>
To see both just add ?KB_Debug_Errors&KB_Debug_Hooks. (Essentially $_GET[var] must be set to enable that feature).
<h3>Features</h3>
<ul>
<li>Logs and displays all warnings, errors, etc. alongwith their context.</li>
<li>Logs and displays all hooks alongwith the argument(s) each hook is called with and the functions that run on that particular hook (in order).</li>
</ul>

kb_debug.php

Pär Thernström

Bring more loggers to <a href="https://simple-history.com" rel="nofollow ugc">WordPress user history plugin Simple History</a>. 
That are useful for developers during development of a site or to maintain a live site.
<h3>Important</h3>
Please note that this plugin is no longer actively maintained and only receives security fixes.
<h3>Modern and up to date alternatives</h3>
For an up to date alternative please see the <a href="https://simple-history.com/add-ons/debug-and-monitor/" rel="nofollow ugc">Debug & Monitor add-on</a> which logs WP REST API requests, sent emails, HTTP API requests, and WP cron jobs.
<h3>Get more features with Simple History Premium</h3>
Need advanced WordPress audit logging capabilities? Simple History Premium extends your site monitoring with powerful features:
Enhanced WordPress Activity Logging:
<ul>
<li>Advanced Analytics Dashboard – Comprehensive stats and visual activity tracking</li>
<li>Custom Event Logging – Add manual entries and notifications to your audit trail</li>
<li>Stealth Mode – Control user access with granular permissions</li>
<li>Flexible Log Retention – Configure automatic cleanup or keep logs indefinitely</li>
<li>Data Export Tools – Export logs in CSV/JSON format for analysis</li>
<li>Security Features – IP anonymization and login attempt location tracking</li>
</ul>
<a href="https://simple-history.com/premium/" rel="nofollow ugc">» Get Simple History Premium</a>
<h3>Included loggers and plugins</h3>
Post to Slack
All your events is posted to a <a href="https://slack.com/" rel="nofollow ugc">Slack</a> channel of your choice, using an <a href="https://api.slack.com/incoming-webhooks" rel="nofollow ugc">incoming webhook</a>. Yes, with this plugin enabled 
there is no need what so ever to ever leave Slack to see what’s happening on your site or the site of your 
clients or… well, on any site where you have Simple Histor and this plugin enabled.
WP_Mail-logger
See all mails sent with wp_mail(), no matter what the recipient address is. 
changelog
404 logger
View page visits that load the 404 template.
JavaScript error logger
See what JavaScript errors users that visit your site is getting.
SystemLog logger
Log all messages from Simple History to the syslog on the server. With this logger enabled there is no need to use the beautiful GUI of Simple History ;).
HTTP API logger
Log all usage of HTTP calls from functions like wp_remote_post() and wp_remote_get().
You can the URL requested, the arguments posted and the full returned result, including server headers.
The time for the request to complete is also logged. Great for debugging!

Developer Loggers for Simple History

Useful loggers for SimpleHistory for developers during development of a site or to maintain a live site.

kb_debug.php vs Developer Loggers for Simple History