Php-specific array sorting class ArraySortUtil usage example

This article mainly introduces the usage of php-specific array sorting class ArraySortUtil. The example shows how ArraySortUtil achieves array sorting and corresponding usage tips, for more information about how to use ArraySortUtil, a php-specific array sorting class. Share it with you for your reference. The details are as follows:

** * 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; }}

An example is as follows:

<?phprequire_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($assetData, array(  array("field"=>"category"),  array("field"=>"subcategory", "order" => true) // desc ));echo "multisort:result";echo "
"; print_r($sorted);echo "
";$sorted = ArraySortUtil::uasort($assetData, array(  array("field"=>"category"),  array("field"=>"subcategory", "order" => true) // desc ));echo "uasort:result";echo "
"; print_r($sorted);echo "
";

I hope this article will help you with php programming.