PHP Debug Bar (php-debugbar/php-debugbar v3.7). Shows at bottom of every page.
| Tab | Data |
|---|---|
| PHP | PHP version, extensions |
| Messages | Custom log messages |
| Request | $_GET, $_POST, $_SERVER, $_COOKIE, $_SESSION |
| Timeline | Execution time measurements |
| Memory | Memory usage stats |
| Exceptions | Caught exceptions + PHP errors |
| Config | $CFG (secrets/passwords excluded) |
| Moodle | Moodle version, PHP version, debug mode, language |
| String Manager | get_string() calls (only when custom string manager enabled) |
| Database | SQL query log (if enabled in settings) |
\local_devkit\local\debugbar::log('message');
\local_devkit\local\debugbar::log('error happened', \local_devkit\local\log_level::ERROR);Levels: alert, critical, debug, emergency, error, info, notice, success, warning.
$result = \local_devkit\local\debugbar::measure('slow operation', function () {
// Do stuff.
return $output;
});Shows in Timeline + Messages tabs.
try {
// Risky code.
} catch (\Throwable $e) {
\local_devkit\local\debugbar::log_exception($e);
}Also auto-catches all PHP errors/exceptions via custom handlers.
File paths in debug bar are clickable. Choose editor in settings.
23 editors: sublime, textmate, emacs, macvim, codelite, phpstorm, phpstorm-remote, idea, idea-remote, vscode, vscode-insiders, vscode-remote, vscode-insiders-remote, vscodium, nova, xdebug, atom, espresso, netbeans, cursor, cursor-remote, windsurf, zed, antigravity.
Debug data persists across redirects via SQLite at $CFG->tempdir/local_devkit/debugbar.sqlite. Prunes to 1 dataset.
URL: /local/devkit/debugbar/open.php (requires login).
Debug bar binds to fetch and XHR requests. Shows AJAX debug tab.
See Configuration for AJAX setup.