Re4DeR

<p>This plugin is very usefull if you want warn people going to one category.</p>
<p>It set cookie, co visitor will see alert message only once.</p>
<p>For example you have a magazine and in one category you have adult content.<br />
With this plugin you can set up warning for access to this category-and user have to confirm your message.</p>
<h3>A brief Markdown Example</h3>
<p>Ordered list:</p>
<ol>
<li>Choose between alert and confirm</li>
</ol>


WP Warning

This plugin allow you warn visitors when they want to go in category.

webheadcoder

<p>This plugin uses hooks in the opposite way most plugins do.  You add <code>do_action</code> where you want to do some logging and this plugin will save it to the database only when active.</p>
<h4>Log Activity</h4>
<p>This plugin now logs plugin activity (when activated, deactivated, deleted, updated, installed), when wordpress is updated, and when functions are used wrong or deprecated.</p>
<p>Example:</p>
<pre><code>do_action( 'wp_log_info', 'So far ok', 'Details of what is ok.' );
if ( $something_bad_happened ) {
    do_action( 'wp_log_error', 'This Happened!', 'Details of what happened.' );
    ...
}
</code></pre>
<p>See Tools->Logs to view, delete, and export the logs on the admin side.  Only users with the manage_options capability will have access.</p>
<p>This plugin automatically logs deprecated and doing_it_wrong errors.  The rest is what you add to your code.</p>
<p>You can log what functions will be run for a specific action or filter.  For example if you want to see what runs in the ‘init’ hook:</p>
<pre><code>function check_init_hook() {
    do_action( 'wp_log_debug_hook', 'init' );
}
add_filter( 'init', 'check_init_hook', 0 );
</code></pre>
<p>The following are the different levels of logging to add to your code.  You can use any level how you see fit, the descriptions of each level are just guidelines.</p>
<h4>Emergency</h4>
<p>System is unusable<br />
    do_action( ‘wp_log_emergency’, $label, $message );</p>
<h4>Alert</h4>
<p>Action must be taken immediately.<br />
    do_action( ‘wp_log_alert’, $label, $message );</p>
<h4>Critical</h4>
<p>Critical conditions.<br />
    do_action( ‘wp_log_critical’, $label, $message );</p>
<h4>Error</h4>
<p>Runtime errors that do not require immediate action but should typically be logged and monitored.<br />
    do_action( ‘wp_log_error’, $label, $message );</p>
<h4>Warning</h4>
<p>Exceptional occurrences that are not errors.<br />
    do_action( ‘wp_log_warning’, $label, $message );</p>
<h4>Notice</h4>
<p>Normal but significant events.<br />
    do_action( ‘wp_log_notice’, $label, $message );</p>
<h4>Info</h4>
<p>Interesting events.<br />
    do_action( ‘wp_log_info’, $label, $message );</p>
<h4>Debug</h4>
<p>Detailed debug information.<br />
    do_action( ‘wp_log_debug’, $label, $message );</p>


WP Log Action

Add error or debug logging in your code and leave it there.  Logs will only be recorded with this plugin, otherwise will be ignored.

WP Warning vs WP Log Action