note 50389 added to function.array-combine
| From: | ifeghali at interveritas dot net | Date: | Sat, 26 Feb 2005 18:53:03 +0000 |
| Subject: | note 50389 added to function.array-combine | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-85586@lists.php.net to get a copy of this message | ||
Use that code to group an array by its first element.
<?
function groupbyfirst($array)
{
foreach ($array as $row)
{
$firstkey = array_keys($row);
$firstkey = $firstkey[0];
$key = $row[$firstkey];
unset($row[$firstkey]);
$newarray[$key][] = $row;
}
return $newarray;
}
?>
Example:
<?
$array =
Array(
0 => Array('color' => 'red','name' => 'apple',
'quantity' => '3'),
1 => Array('color' => 'green','name' => 'pear',
'quantity' => '2'),
2 => Array('color' => 'yellow','name' => 'corn',
'quantity' => '3'),
3 => Array('color' => 'blue','name' => 'grape',
'quantity' => '4'),
4 => Array('color' => 'yellow','name' => 'banana',
'quantity' => '13'),
);
$output = groupbyfirst($array);
print_r($output);
?>
will return:
Array
(
[red] => Array ( [0] => Array ( [name] => apple [quantity] => 3 ) )
[green] => Array ( [0] => Array ( [name] => pear [quantity] => 2 ) )
[yellow] => Array ( [0] => Array ( [name] => corn [quantity] => 3 ), [1] => Array (
[name] => banana [quantity] => 13 ) )
[blue] => Array ( [0] => Array ( [name] => grape [quantity] => 4 ))
)
Or you can use mysql recordset:
<?
while ($row=mysql_fetch_array($result,MYSQL_ASSOC))
{
$firstkey = array_keys($row);
$firstkey = $firstkey[0];
$key = $row[$firstkey];
unset($row[$firstkey]);
$newarray[$key][] = $row;
}
?>
----
Manual Page -- http://www.php.net/manual/en/function.array-combine.php
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