How to use prepared statements in Joomla?

问题:

How to use Prepare methods in joomla model?
for example in pdo we use :

db->prepare('INSERT INTO tbl (`city`,`date`,`uid`,`title`) VALUES(:city,:date,:uid,:title)');  

How can I do it in the Joomla!

回答1:

In Joomla, you always stick to the API which caters for the supported database types, like so:

$db = JFactory::getDbo();

$query = $db->getQuery(true);
$columns = array('city', 'date', 'uid', 'title');
$values = array($db->quote('value1'), $db->quote('value2'), $db->quote('value3'), $db->quote('value4'));

// Prepare the insert query.
$query
    ->insert($db->quoteName('#__tablename')) //make sure you keep #__
    ->columns($db->quoteName($columns))
    ->values(implode(',', $values));

$db->setQuery($query);
$db->query();

and for Joomla 3.x, you can replace $db->query(); with $db->execute();