PDO
PHP Manual

PDO::query

Prepares and executes an SQL statement without placeholders

Description

public PDOStatementfalse PDO::query(string $query, intnull $fetchMode = null)
public PDOStatementfalse PDO::query(string $query, intnull $fetchMode = PDO::FETCH_COLUMN, int $colno)
public PDOStatementfalse PDO::query(
    string $query,
    intnull $fetchMode = PDO::FETCH_CLASS,
    string $classname,
    array $constructorArgs
)
public PDOStatementfalse PDO::query(string $query, intnull $fetchMode = PDO::FETCH_INTO, object $object)

PDO::query prepares and executes an SQL statement in a single function call, returning 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.

Note:

If the query contains placeholders, the statement must be prepared and executed separately using PDO::prepare and PDOStatement::execute methods.

Parameters

query

The SQL statement to prepare and execute.

If the SQL contains placeholders, PDO::prepare and PDOStatement::execute must be used instead. Alternatively, the SQL can be prepared manually before calling PDO::query, with the data properly formatted using PDO::quote if the driver supports it.

fetchMode

The default fetch mode for the returned PDOStatement. It must be one of the PDO::FETCH_* constants.

If this argument is passed to the function, the remaining arguments will be treated as though PDOStatement::setFetchMode was called on the resultant statement object. The subsequent arguments vary depending on the selected fetch mode.

Return Values

Returns a PDOStatement object or false on failure.

Errors/Exceptions

Emits an error with level E_WARNING if the attribute PDO::ATTR_ERRMODE is set to PDO::ERRMODE_WARNING.

Throws a PDOException if the attribute PDO::ATTR_ERRMODE is set to PDO::ERRMODE_EXCEPTION.

Examples

Example #1 SQL with no placeholders can be executed using PDO::query

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

The above example will output:

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

See Also

  • PDO::exec
  • PDO::prepare
  • PDOStatement::execute