The method returns an array of ADOFieldObjects representing all of the objects returned in a result set. It is the equivalent of looping from 1 to fieldCount , calling the fetchField method. The method returns false if a recordset is not available for any reason

This example uses a postgres database so returns numerous Postgress specific fields

$sql = "SELECT * FROM employees";
 
$result = $db->execute($sql)
 
print_r($results->fieldTypesArray());
/*
* Returns
Array
(
    [0] => ADOFieldObject Object
        (
            [name] => emp_no
            [max_length] => 0
            [type] => 3
            [orgname] => emp_no
            [table] => dept_emp
            [orgtable] => dept_emp
            [def] => 
            [db] => employees
            [catalog] => def
            [length] => 11
            [charsetnr] => 63
            [flags] => 53251
            [decimals] => 0
            [primary_key] => 2
            [not_null] => 1
            [auto_increment] => 0
            [binary] => 0
            [unsigned] => 0
        )
 
    [1] => ADOFieldObject Object
        (
            [name] => dept_no
            [max_length] => 4
            [type] => 254
            [orgname] => dept_no
            [table] => dept_emp
            [orgtable] => dept_emp
            [def] => 
            [db] => employees
            [catalog] => def
            [length] => 16
            [charsetnr] => 255
            [flags] => 20491
            [decimals] => 0
            [primary_key] => 2
            [not_null] => 1
            [auto_increment] => 0
            [binary] => 0
            [unsigned] => 0
        )
 
    [2] => ADOFieldObject Object
        (
            [name] => from_date
            [max_length] => 10
            [type] => 10
            [orgname] => from_date
            [table] => dept_emp
            [orgtable] => dept_emp
            [def] => 
            [db] => employees
            [catalog] => def
            [length] => 10
            [charsetnr] => 63
            [flags] => 4225
            [decimals] => 0
            [primary_key] => 0
            [not_null] => 1
            [auto_increment] => 0
            [binary] => 128
            [unsigned] => 0
        )
......
*/