PDO::pgsqlCopyToFile Copy data from table into file &reftitle.description; public bool PDO::pgsqlCopyToFile stringtable_name stringfilename stringdelimiter"\t" stringnull_as"\\\\N" stringfields Copies data from table into file specified by filename using delimiter as fields delimiter and fields list &reftitle.parameters; table_name String containing table name filename Filename to export data delimiter Delimiter used in file specified by filename null_as How to interpret null values fields List of fields to insert &reftitle.returnvalues; Returns &true; on success,&return.falseforfailure;.