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    <h3>Editing: ZendMonitorHandler.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php declare(strict_types=1);

/*
 * This file is part of the Monolog package.
 *
 * (c) Jordi Boggiano &lt;j.boggiano@seld.be&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Monolog\Handler;

use Monolog\Formatter\FormatterInterface;
use Monolog\Formatter\NormalizerFormatter;
use Monolog\Logger;

/**
 * Handler sending logs to Zend Monitor
 *
 * @author  Christian Bergau &lt;cbergau86@gmail.com&gt;
 * @author  Jason Davis &lt;happydude@jasondavis.net&gt;
 *
 * @phpstan-import-type FormattedRecord from AbstractProcessingHandler
 */
class ZendMonitorHandler extends AbstractProcessingHandler
{
    /**
     * Monolog level / ZendMonitor Custom Event priority map
     *
     * @var array&lt;int, int&gt;
     */
    protected $levelMap = [];

    /**
     * @throws MissingExtensionException
     */
    public function __construct($level = Logger::DEBUG, bool $bubble = true)
    {
        if (!function_exists('zend_monitor_custom_event')) {
            throw new MissingExtensionException(
                'You must have Zend Server installed with Zend Monitor enabled in order to use this handler'
            );
        }
        //zend monitor constants are not defined if zend monitor is not enabled.
        $this-&gt;levelMap = [
            Logger::DEBUG     =&gt; \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Logger::INFO      =&gt; \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Logger::NOTICE    =&gt; \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Logger::WARNING   =&gt; \ZEND_MONITOR_EVENT_SEVERITY_WARNING,
            Logger::ERROR     =&gt; \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Logger::CRITICAL  =&gt; \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Logger::ALERT     =&gt; \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Logger::EMERGENCY =&gt; \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
        ];
        parent::__construct($level, $bubble);
    }

    /**
     * {@inheritDoc}
     */
    protected function write(array $record): void
    {
        $this-&gt;writeZendMonitorCustomEvent(
            Logger::getLevelName($record['level']),
            $record['message'],
            $record['formatted'],
            $this-&gt;levelMap[$record['level']]
        );
    }

    /**
     * Write to Zend Monitor Events
     * @param string $type      Text displayed in &quot;Class Name (custom)&quot; field
     * @param string $message   Text displayed in &quot;Error String&quot;
     * @param array  $formatted Displayed in Custom Variables tab
     * @param int    $severity  Set the event severity level (-1,0,1)
     *
     * @phpstan-param FormattedRecord $formatted
     */
    protected function writeZendMonitorCustomEvent(string $type, string $message, array $formatted, int $severity): void
    {
        zend_monitor_custom_event($type, $message, $formatted, $severity);
    }

    /**
     * {@inheritDoc}
     */
    public function getDefaultFormatter(): FormatterInterface
    {
        return new NormalizerFormatter();
    }

    /**
     * @return array&lt;int, int&gt;
     */
    public function getLevelMap(): array
    {
        return $this-&gt;levelMap;
    }
}
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