Guard against xdebug versions that cause this to segfault.
Guard against xdebug versions that cause this to segfault.

tideways/php-profiler-extension,lisa2lisa/php-profiler-extension,stof/php-profiler-extension,krakjoe/php-profiler-extension,krakjoe/php-profiler-extension,lisa2lisa/php-profiler-extension,stof/php-profiler-extension,tideways/php-profiler-extension,QafooLabs/php-profiler-extension,QafooLabs/php-profiler-extension