PDO::query
(no version information, might be only in CVS)
PDO::query --
Executes an SQL statement, returning a result set as a PDOStatement object
Beschreibung
PDOStatement
PDO::query ( string statement )
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().
Parameter Liste
- statement
The SQL statement to prepare and execute.
Rückgabewerte
PDO::query() returns a PDOStatement object.
Beispiele
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.
<?php function getFruit($conn) { $sql = 'SELECT name, colour, calories FROM fruit ORDER BY name'; foreach ($conn->query($sql) as $row) { print $row['NAME'] . "\t"; print $row['COLOUR'] . "\t"; print $row['CALORIES'] . "\n"; } } ?>
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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 |
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Siehe auch
PDO::exec() |
PDO::prepare() |
PDOStatement::execute() |