mysqli_dump_debug_info mysqli->dump_debug_info Dump debugging information into the log boolmysqli_dump_debug_info mysqlilink This function is designed to be executed by an user with the SUPER privilege and is used to dump debugging information into the log for the MySQL Server relating to the connection specified by the link parameter. &reftitle.returnvalues; &return.success; &reftitle.seealso; mysqli_debug.