(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.2.0)

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


public PDO::query ( string $statement ) : PDOStatement
public PDO::query ( string $statement , int $fetch_style = PDO::FETCH_COLUMN , int $colno ) : PDOStatement
public PDO::query ( string $statement , int $fetch_style = PDO::FETCH_CLASS , string $classname , array $ctorargs ) : PDOStatement
public PDO::query ( string $statement , int $fetch_style = PDO::FETCH_INTO , object $object ) : PDOStatement

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().


If more than one argument is passed to this function, the remaining arguments will be treated as though you called PDOStatement::setFetchMode() on the resultant statement object.



The SQL statement to prepare and execute.

Data inside the query should be properly escaped.


PDO::query() returns a PDOStatement object, or false on failure.


Beispiel #1 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.

'SELECT name, color, calories FROM fruit ORDER BY name';
foreach (
$conn->query($sql) as $row) {
$row['name'] . "\t";
$row['color'] . "\t";
$row['calories'] . "\n";

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

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

Siehe auch

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User Contributed Notes 6 notes

fredrik at NOSPAM dot rambris dot com
13 years ago
The handling of errors by this function is controlled by the attribute PDO::ATTR_ERRMODE.

Use the following to make it throw an exception:
dozoyousan at gmail dot com
14 years ago
> When query() fails, the boolean false is returned.

I think that is "Silent Mode".
If that set attribute ErrorMode "Exception Mode"
then that throw PDOException.
$pdoObj = new PDO( $dsn, $user, $pass );
marcos at marcosregis dot com
12 years ago
After a lot of hours working with DataLink on Oracle->MySQL and PDO we (me and Adriano Rodrigues, that solve it) discover that PDO (and oci too) need the attribute AUTOCOMMIT set to FALSE to work correctly with.
There's  3 ways to set autocommit to false: On constructor, setting the atribute after construct and before query data or initiating a Transaction (that turns off autocommit mode)

The examples:
// First way - On PDO Constructor
$options = array(PDO::ATTR_AUTOCOMMIT=>FALSE);

$pdo = new PDO($dsn,$user,$pass,$options);

// now we are ready to query DataLinks


// Second Way - Before create statements
$pdo = new PDO($dsn,$user,$pass);

// or

// now we are ready to query DataLinks

To use DataLinks on oci just use OCI_DEFAULT on oci_execute() function;
stefano[dot]bertoli [at] gmail[dot]com
6 years ago
Trying to pass like second argument PDO::FETCH_ASSOC it still work.

So passing FETCH TYPE like argument seems work.

This save you from something like:

= $stmt->setFetchMode(PDO::FETCH_NUM);

= $db->query('SELECT * FROM `mytable` WHERE true', PDO::FETCH_ASSOC);

andrea at bhweb dot it
12 years ago
If someone is suffering of the "MySQL server has gone away" problem after executing multiple queries, this is a solution that solved it for me. It's similar to the one needed for the exact same problem in mysqli.

do {
$stmt->fetch(); $stmt->closeCursor(); ++$line; } while($stmt-

I found this only works using prepare and execute this way, not if you
directly execute the query with query().
1 year ago
The Documentation doesn’t mention this, but you can use a fetch style as a second parameter. For example:

$data as $row) {
//    etc
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