<html><body>function a($txt) { b("Glenn");}function b($txt) { c("Cleveland");}function c($txt) { debug_print_backtrace();}a("Peter");</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_error_debug_print_backtrace by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:50:59 GMT --></html>