PDO::query

Executes an SQL statement, returning a result set as a PDOStatement object

&reftitle.description; public `PDOStatement` `PDO::query` `string` `statement` public `PDOStatement` `PDO::query` `string` `statement` `int` `PDO::FETCH_COLUMN` `int` `colno` public `PDOStatement` `PDO::query` `string` `statement` `int` `PDO::FETCH_CLASS` `string` `classname` `array` `ctorargs` public `PDOStatement` `PDO::query` `string` `statement` `int` `PDO::FETCH_INTO` `object` `object`

`PDO::query` executes an SQL statement in a single function call, returning the result set (if any) returned by the statement as a PDOStatement object.

For a query that you need to issue multiple times, you will realize better performance if you prepare a PDOStatement object using `PDO::prepare` and issue the statement with multiple calls to `PDOStatement::execute`.

If you do not fetch all of the data in a result set before issuing your next call to `PDO::query`, your call may fail. Call `PDOStatement::closeCursor` to release the database resources associated with the PDOStatement object before issuing your next call to `PDO::query`.

Although this function is only documented as having a single parameter, you may pass additional arguments to this function. They will be treated as though you called `PDOStatement::setFetchMode` on the resultant statement object.

&reftitle.parameters;

`statement`

- The SQL statement to prepare and execute.

  Data inside the query should be properly escaped.

&reftitle.returnvalues;

`PDO::query` returns a PDOStatement object, or &false; on failure.

&reftitle.examples;

### Demonstrate PDO::query

A nice feature of `PDO::query` is that it enables you to iterate over the rowset returned by a successfully executed SELECT statement.

    <?php
    function getFruit($conn) {
        $sql = 'SELECT name, color, calories FROM fruit ORDER BY name';
        foreach ($conn->query($sql) as $row) {
            print $row['name'] . "\t";
            print $row['color'] . "\t";
            print $row['calories'] . "\n";
        }
    }
    ?>

&example.outputs;

    apple   red     150
    banana  yellow  250
    kiwi    brown   75
    lemon   yellow  25
    orange  orange  300
    pear    green   150
    watermelon      pink    90

&reftitle.seealso;

- `PDO::exec`
- `PDO::prepare`
- `PDOStatement::execute`