本文实例讲述了php专用数组排序类ArraySortUtil用法。分享给大家供大家参考。具体如下：
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**
* ArraySortUtil is a array sort utility, you can extends the sorting engine.
*
* @version 0.1
* @package utility.sort
*/
class ArraySortUtil
{
static function uasort($unsort, $fields)
{
if ( !is_array($unsort) || sizeof($unsort) <= 0 ) return $unsort;
$sorted = uasortEngine::uasort($unsort, $fields);
return $sorted;
}
static function multisort($unsort, $fields)
{
if ( !is_array($unsort) || sizeof($unsort) <= 0 ) return $unsort;
$sorted = multisortEngine::multisort($unsort, $fields);
return $sorted;
}
}
class multisortEngine
{
static function multisort($unsort, $fields)
{
$sorted = $unsort;
if (is_array($unsort))
{
$loadFields = array();
foreach($fields as $sortfield)
{
$loadFields["field"][] = array(
"name" => $sortfield["field"],
"order" => $sortfield["order"],
"nature" => $sortfield["nature"],
"caseSensitve" => $sortfield["caseSensitve"]
);
$loadFields["data"][$field["field"]] = array();
}
// Obtain a list of columns
foreach ($sorted as $key => $row) {
foreach($loadFields["field"] as $field) {
$value = $row[$field["name"]];
$loadFields["data"][$field["name"]][$key] = $value;
}
}
$parameters = array();
foreach($loadFields["field"] as $sortfield) {
$array_data = $loadFields["data"][$sortfield["name"]];
$caseSensitve = ( $sortfield["caseSensitve"] == null ) ? $sortfield["caseSensitve"] : false;
if (!$caseSensitve) $array_data = array_map('strtolower', $array_data);
$parameters[] = $array_data;
if ( $sortfield["order"] != null ) $parameters[] = ( $sortfield["order"] ) ? SORT_DESC : SORT_ASC;
if ( $sortfield["nature"] != null ) $parameters[] = ( $sortfield["nature"] ) ? SORT_REGULAR : SORT_STRING;
}
$parameters[] = &$sorted;
call_user_func_array("array_multisort", $parameters);
}
return $sorted;
}
}
class uasortEngine
{
static private $caseSensitve = false;
static private $sortfields = array();
static private $sortorder = true;
static private $nature = false;
static private function uasort_callback(&$a, &$b)
{
foreach(self::$sortfields as $sortfield)
{
$_field = $sortfield["field"];
$_order = isset($sortfield["order"]) ? $sortfield["order"] : self::$sortorder;
$_caseSensitve = isset($sortfield["caseSensitve"]) ? $sortfield["caseSensitve"] : self::$caseSensitve;
$_nature = isset($sortfield["nature"]) ? $sortfield["nature"] : self::$nature;
if ($_field != "")
{
$retval = 0;
if ($_nature)
{
if ($_caseSensitve)
{
$compare = strnatcmp($a[$_field], $b[$_field]);
}
else
{
$compare = strnatcasecmp($a[$_field], $b[$_field]);
}
}
else
{
if ($_caseSensitve)
{
$compare = strcmp($a[$_field], $b[$_field]);
}
else
{
$compare = strcasecmp($a[$_field], $b[$_field]);
}
}
if ($compare !== 0 && !$_order) $compare = ($compare > 0) ? -1 : 1;
}
if ($compare !== 0) break;
}
return $compare;
}
static function uasort($unsort, $fields)
{
self::$sortfields = $fields;
$sorted = $unsort;
uasort($sorted, array('uasortEngine', 'uasort_callback'));
return $sorted;
}
}
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使用范例如下：
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<?php
require_once('class.ArraySortUtil.php');
// declare test data
$assetData[] = array("id" => 1, "category"=>"Hardware", "subcategory"=>"Personal Computer", "supplier" => "DELL", "particular"=>"Vostro 1320", "purchase_price"=>2300, "other_charges"=>500);
$assetData[] = array("id" => 2, "category"=>"Hardware", "subcategory"=>"Personal Computer", "supplier" => "DELL", "particular"=>"Vostro 1420", "purchase_price"=>2500, "other_charges"=>0);
$assetData[] = array("id" => 3, "category"=>"Hardware", "subcategory"=>"Laptop", "supplier" => "DELL", "particular"=>"Vostro 1520", "purchase_price"=>4500, "other_charges"=>100);
$assetData[] = array("id" => 4, "category"=>"Hardware", "subcategory"=>"Laptop", "supplier" => "Acer", "particular"=>"Apire One", "purchase_price"=>2500, "other_charges"=>200);
$assetData[] = array("id" => 5, "category"=>"Furniture", "subcategory"=>"Table", "supplier" => "CHEN", "particular"=>"Manager Table", "purchase_price"=>1000, "other_charges"=>0);
$assetData[] = array("id" => 6, "category"=>"Furniture", "subcategory"=>"Table", "supplier" => "CHEN", "particular"=>"Staff Table", "purchase_price"=>500, "other_charges"=>0);
$assetData[] = array("id" => 7, "category"=>"Furniture", "subcategory"=>"Chair", "supplier" => "CHEN", "particular"=>"Staff Chair", "purchase_price"=>500, "other_charges"=>0);
$sorted = ArraySortUtil::multisort($assetData, array(
array("field"=>"category"),
array("field"=>"subcategory", "order" => true) // desc
));
echo "<h1>multisort:result</h1>";
echo "<pre>";
print_r($sorted);
echo "</pre>";
$sorted = ArraySortUtil::uasort($assetData, array(
array("field"=>"category"),
array("field"=>"subcategory", "order" => true) // desc
));
echo "<h1>uasort:result</h1>";
echo "<pre>";
print_r($sorted);
echo "</pre>";
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希望本文所述对大家的php程序设计有所帮助。