(PHP 7) Clear the most recent error void error_clear_last

(PHP 5, PHP 7) Prints a backtrace void debug_print_backtrace

(PHP 5, PHP 7) Restores the previously defined exception handler function

(PHP 4, PHP 5, PHP 7) Sets which PHP errors are reported

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Generates a backtrace

(PHP 5, PHP 7) Sets a user-defined exception handler function

(PHP 5 >= 5.2.0, PHP 7) Get the last occurred error

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Restores the previous error handler function

(PHP 4, PHP 5, PHP 7) Send an error message to the defined error handling routines