Joomla 3.1。 从数据库中提取数据

Question

I want to pull data from MySQL. I try this

<?php 
$db = JFactory::getDbo();
$query = $db->getQuery(true);

$query->select(array($db->quoteName('total_amount')));
$query->from($db->quoteName('money'));

$db->setQuery($query);

$results = $db->loadResult();

?>
<?php echo $results; ?>  

but it gives me a single result. What I want is, to pull all data from the column and put it separately. What is the mistake?

Answer 1

loadResult() displays a single result from the database. What you need is loadObjectList() .

So you query will be like so:

<?php 
$db = JFactory::getDbo();
$query = $db->getQuery(true);

$query->select(array($db->quoteName('total_amount')));
$query->from($db->quoteName('money'));

$db->setQuery($query);

$results = $db->loadObjectList();

// display the results
foreach ( $results as $result) {
   echo "<p>" . $result->total_amount . "</p>";
}
?>

Please note that if the database table you're using is from a Joomla extension and not one you have manually created, then you should use quoteName('#__money') . Note the #__ before the table name.

Answer 2

You should use loadObjectList() instead of loadResult and print list of objects with print_r(). More details: http://docs.joomla.org/Selecting_data_using_JDatabase

<?php  
$db = JFactory::getDbo();
$query = $db->getQuery(true);

$query->select(array($db->quoteName('total_amount')));
$query->from($db->quoteName('money'));

$db->setQuery($query);

$results = $db->loadObjectList();

?>
<?php print_r($results); ?>