Readers, PHP is being attempted to display data from postgresql to html web page. So far read manual § 'pg_execute'. Following code: $databaseconnection=pg_connect("dbname=databasename user=databaseuser password=databasepassword port=portnumber"); $databasepreparation=pg_prepare($databaseconnection, "databasequery", 'SELECT something,something1 FROM databasetable'); $databaseexecution=pg_execute($databaseconnection, "databasequery", array("query display")); File 'apache2/error.log' shows: " PHP Warning: pg_execute(): Query failed: ERROR: bind message supplies 1 parameters, but prepared statement "databasequery" requires 0 in ... " Please what is my mistake?