Extend driver stat class to fix a compatibility bug with PHP 8.1

Author: guvra

Model/Profiler/Driver/Standard/Stat.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade this module
+ * to newer versions in the future.
+ */
+declare(strict_types=1);
+
+namespace Smile\DebugToolbar\Model\Profiler\Driver\Standard;
+
+use Magento\Framework\Profiler;
+use Magento\Framework\Profiler\Driver\Standard\Stat as BaseStat;
+
+/**
+ * Overridden because core class is not compatible with PHP 8.1...
+ */
+class Stat extends BaseStat
+{
+    /**
+     * @inheritdoc
+     */
+    protected function _getOrderedTimerIds()
+    {
+        $timerIds = array_keys($this->_timers);
+        if (count($timerIds) <= 2) {
+            /* No sorting needed */
+            return $timerIds;
+        }
+
+        /* Prepare PCRE once to use it inside the loop body */
+        $nestingSep = preg_quote(Profiler::NESTING_SEPARATOR, '/');
+        $patternLastTimerId = '/' . $nestingSep . '(?:.(?!' . $nestingSep . '))+$/';
+
+        $prevTimerId = $timerIds[0];
+        $result = [$prevTimerId];
+        for ($i = 1; $i < count($timerIds); $i++) {
+            $timerId = $timerIds[$i];
+            /* Skip already added timer */
+            if (!$timerId) {
+                continue;
+            }
+            /* Loop over all timers that need to be closed under previous timer */
+            while (strpos($timerId, $prevTimerId . Profiler::NESTING_SEPARATOR) !== 0) {
+                /* Add to result all timers nested in the previous timer */
+                for ($j = $i + 1; $j < count($timerIds); $j++) {
+                    // REWRITE: check null value before calling strpos
+                    if ($timerIds[$j] !== null
+                        && strpos($timerIds[$j], $prevTimerId . Profiler::NESTING_SEPARATOR) === 0
+                    ) {
+                        $result[] = $timerIds[$j];
+                        /* Mark timer as already added */
+                        $timerIds[$j] = null;
+                    }
+                }
+                /* Go to upper level timer */
+                $count = 0;
+                $prevTimerId = preg_replace($patternLastTimerId, '', $prevTimerId, -1, $count);
+                /* Break the loop if no replacements was done. It is possible when we are */
+                /* working with top level (root) item */
+                if (!$count) {
+                    break;
+                }
+            }
+            /* Add current timer to the result */
+            $result[] = $timerId;
+            $prevTimerId = $timerId;
+        }
+        return $result;
+    }
+}

registration.php

@@ -8,8 +8,8 @@
 
 use Magento\Framework\Component\ComponentRegistrar;
 use Magento\Framework\Profiler;
-use Magento\Framework\Profiler\Driver\Standard\Stat;
 use Smile\DebugToolbar\Helper\Profiler as SmileProfiler;
+use Smile\DebugToolbar\Model\Profiler\Driver\Standard\Stat;
 
 if (PHP_SAPI !== 'cli') {
     // We need to declare the stat profiler manually, to use it after