checking for unsafe functions "PHP"

$badFunctions = array( "a...", "dom_import_simplexml", "domattr", "domattribute_name", "domattribute_set_value", "domattribute_specified", "domattribute_value", "domcharacterdata", "domcomment", "domdocument", "domdocument_add_root", "domdocument_create_attribute", "domdocument_create_cdata_section", "domdocument_create_comment", "domdocument_create_element", "domdocument_create_element_ns", "domdocument_create_entity_reference", "domdocument_create_processing_instruction", "domdocument_create_text_node", "domdocument_doctype", "domdocument_document_element", "domdocument_dump_file", "domdocument_dump_mem", "domdocument_get_element_by_id", "domdocument_get_elements_by_tagname", "domdocument_html_dump_mem", "mysql_get_client_info", "mysql_get_host_info", "mysql_get_proto_info", "mysql_get_server_info", "mysql_info", "mysql_insert_id", "mysql_list_dbs", "mysql_list_fields", "mysql_list_processes", "mysql_list_tables", "mysql_num_fields", "mysql_num_rows", "mysql_pconnect", "mysql_ping", "mysql_query", "mysql_real_escape_string", "mysql_result", "mysql_select_db", "mysql_set_charset", "mysql_stat", "mysql_tablename", "mysql_thread_id", "mysql_unbuffered_query", "mysqli", "mysqli_bind_param", "mysqli_bind_result", "mysqli_client_encoding", "mysqli_disable_reads_from_master", "mysqli_disable_rpl_parse", "mysqli_driver", "mysqli_enable_reads_from_master", "mysqli_enable_rpl_parse", "mysqli_escape_string", "mysqli_execute", "mysqli_fetch", "mysqli_get_metadata", "mysqli_master_query", "mysqli_param_count", "mysqli_report", "mysqli_result", "mysqli_rpl_parse_enabled", "mysqli_rpl_probe", "mysqli_rpl_query_type", "mysqli_send_long_data", "mysqli_send_query", "mysqli_set_opt", "z...");
foreach ($badFunctions as $disable) {
if (function_exists("$disable"))
die("Unsafe function $disable found. Aborting!\n");
}
?>