Looping through array objects to output
I have sent $data['items'] to my view which has created an array full of objects which I can echo with a foreach loop.
foreach($items as $row)
{
echo $row->NAME . " - " . $row->COLOUR . "<br>";
}
what I want to do is echo them to the browser in groups with the name of the colour as a header tag then start the loop for that colour. I'm just not sure what type of loop to do or should I have a loop within a loop?
BLUE
-item 1
-item 3
RED
-item 2
-item 4
-item 5
$list = array();
foreach($items as $row)
{
$list[$row->COLOUR][] = $row->NAME;
}
$header = null;
foreach($list as $item)
{
if($header != $item->COLOUR)
{
echo '<h3>' . $item->COLOUR . '</h3>';
$header = $item->COLOUR;
}
echo '- ' . $item->NAME . '<br />';
}
您可能需要一个临时二维数组:
$tmp = array();
foreach($items as $row)
{
// this code groups all items by color
$name = $row->NAME;
if( !isset ($tmp[ $name ] ) ) $tmp[ $name ] = array();
$tmp[ $name ][] = $row->COLOUR;
}
foreach( $tmp as $color => $items )
{
// colors are now keys to the temp array
echo $color;
// these are all of the items grouped under the current color
foreach( $items as $item )
{
// output the item.
echo "<br /> - $item";
}
echo "<br />";
}
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