Disable HTML stack traces by Xdebug

Question

The administrator has installed Xdebug 2.1.1 in our shared PHP 5.3.0 server in order to use its debugger. Now, I can hardly read the stack traces of uncatched exceptions because they are formatted by Xdebug with annoying colours that interact badly with the site's CSS:

Since PHP runs as Apache module, I've tried to disable this feature in an .htaccess file but I can't make it go:

php_flag xdebug.default_enable Off
php_flag xdebug.overload_var_dump Off
php_flag xdebug.show_exception_trace Off
php_value xdebug.trace_format 1

phpinfo() shows my changes in the Local Value column but I can still see those horrible orange tables. What's the directive I need to change?

Answer 1

Check for xdebug_disable()^Docs:

Disables stack traces

Disable showing stack traces on error conditions.

See as well xdebug.default_enable^Docs.