PHP 错误处理函数列表

debug_backtrace - Generates a backtrace
debug_print_backtrace - Prints a backtrace
error_get_last - Get the last occurred error
error_log - Send an error message somewhere
error_reporting - Sets which PHP errors are reported
restore_error_handler - Restores the previous error handler function
restore_exception_handler - Restores the previously defined exception handler function
set_error_handler - Sets a user-defined error handler function
set_exception_handler - Sets a user-defined exception handler function
trigger_error - Generates a user-level error/warning/notice message
user_error - Alias of trigger_error