Invalidate changed PHP files before worker reload

Abstracts/FileWatcher.php

@@ -291,6 +291,7 @@ class FileWatcher extends AbstractProcess implements OnProcessInterface
 
 		try {
 			$this->lastReloadAtMs = intdiv(hrtime(true), 1000000);
+			$this->invalidateChangedFiles($changedFiles);
 			$preview              = implode(', ', array_slice($changedFiles, 0, 3));
 			if (count($changedFiles) > 3) {
 				$preview .= ' ...';
@@ -307,6 +308,23 @@ class FileWatcher extends AbstractProcess implements OnProcessInterface
 		}
 	}
 
+	private function invalidateChangedFiles(array $changedFiles): void
+	{
+		if (!function_exists('opcache_invalidate')) {
+			return;
+		}
+
+		foreach ($changedFiles as $file) {
+			if (!is_string($file) || !str_ends_with($file, '.php')) {
+				continue;
+			}
+
+			$path = realpath($file) ?: $file;
+			if (is_file($path)) {
+				@opcache_invalidate($path, true);
+			}
+		}
+	}
 	private function isMasterProcessCommand(string $command): bool
 	{
 		$prefix = '[' . config('site.id', 'system-service') . '].Master[';