ccprog

This plugin is derived from the no longer supported 
<a href="https://wordpress.org/plugins/wordpress-logging-service" rel="ugc">WordPress Logging Service</a>. 
Despite that it is not compatiple with it, and there is no upgrade path from one 
to the other.
<h4>Features</h4>
<ul>
<li>No log entries generated by the plugin itself, all come from external API calls</li>
<li>Organisation of log entries in freetext categories</li>
<li>Severity levels</li>
<li>Freetext log messages</li>
<li>Entries can be marked as seen and then filtered from being displayed again</li>
<li>Filtering by minimum severity level</li>
<li>Sort by date, category, user name, severity or blog name (in Multisite installations)</li>
<li>Access to the log page can be granted by user role</li>
</ul>
<h3>API</h3>
<h4>Constants</h4>
Check to test if the plugin is active:
<pre><code>CLGS = true
</code></pre>
Defined severity levels:
<pre><code>CLGS_NOSEVERITY = 0
CLGS_INFO = 1
CLGS_NOTICE = 2
CLGS_WARNING = 3
CLGS_ERROR = 4
CLGS_FATALERROR = 5
</code></pre>
<h4>Functions</h4>
<pre><code>clgs_is_registered ( $category )
</code></pre>
<ul>
<li><code>string $category</code></li>
</ul>
returns <code>true</code> if <code>$category</code> is registered.
<pre><code>clgs_register ( $category, $description )
</code></pre>
registers <code>$category</code> as a log category. <code>$description</code> will be shown in the 
management page. 
It is good practice to use unique categories for each plugin that publishes 
log messages.
<ul>
<li><code>string $category</code> At most 190 (unicode) characters</li>
<li><code>string $description</code> can contain HTML same as comments (filtered by 
 wp_kses_data)</li>
</ul>
returns <code>false</code> if the category is already registered or it is too long.
<pre><code>clgs_clear ( $category )
</code></pre>
deletes all log entries of <code>$category</code>.
<ul>
<li><code>string $description</code> existing category</li>
</ul>
returns number of deleted entries or <code>false</code> if action failed.
<pre><code>clgs_unregister( $category );
</code></pre>
deletes all log entries and then removes <code>$category</code>.
<ul>
<li><code>string $description</code> existing category</li>
</ul>
returns <code>false</code> if false if action failed.
<pre><code>clgs_log( $category, $text, $severity = null, $user = null, $blog_id = null, $date = null );
</code></pre>
writes a new log entry in the specified category
<ul>
<li><code>string $description</code> a registered category name</li>
<li><code>string $text</code> the logged message, can contain HTML same as comments (filtered 
by <code>wp_kses_data</code>)</li>
<li><code>int $severity</code> one of defined severity levels (see above); if missing defaults to 
 CLGS_NOCATEGORY</li>
<li><code>int | string | WP_User $user</code> user id, slug or WP user object are aceptable; if missing 
defaults to current user (or a placeholder if none is logged in)</li>
<li><code>int $blog_id</code> blog id; if missing defaults to current blog</li>
<li><code>int | double | string $date</code> a UNIX timestamp or a string recognized by <code>strtotime()</code>; 
if missing defaults to current time</li>
</ul>
returns <code>false</code> if entering the log failed.

Custom Logging Service

Provides a simple API for storing miscellaneous log entries and displays them in a Dashboard subpage.

Daniel Cid

The Trunc Logging plugin gives you visibility to all the activity inside WordPress. Logins, logouts, failed logins, new posts, new 
plugins, etc. Every major activity from WordPress is stored for analysis and forensics purposes.
Tracked actions:
<ul>
<li>Logins</li>
<li>Failed logins</li>
<li>Posts / pages published</li>
<li>Posts / pages trashed</li>
<li>Posts / pages removed</li>
<li>Plugin installed</li>
<li>Plugin activated</li>
<li>Themes installed</li>
<li>Themes activated</li>
</ul>
And much more.

Trunc Logging – Auditing syslog for WordPress


Maybe a biased review, but I use it on all my sites. Nothing better than having good logging showing all of what is happening inside WordPress. 


Use it on all my sites

The Trunc Logging plugin gives you visibility to all the activity inside WordPress. Logins, logouts, failed logins, new posts, new plugins, etc.

Custom Logging Service vs Trunc Logging – Auditing syslog for WordPress