Méthode PHP pour implémenter le tri de tableaux basé sur ArraySortUtil

Cet article présente principalement l'utilisation de la classe spéciale de tri de tableaux de PHP, ArraySortUtil. L'exemple analyse la méthode d'implémentation du tri de tableaux d'ArraySortUtil et les compétences d'utilisation correspondantes peuvent s'y référer

Cet article décrit PHP. tableau spécial avec des exemples. Utilisation de la classe de tri ArraySortUtil. Les détails sont les suivants :

**
 * 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(&#39;strtolower&#39;, $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(&#39;uasortEngine&#39;, &#39;uasort_callback&#39;));
  return $sorted;
 }
}

Les exemples d'utilisation sont les suivants :

<?php
require_once(&#39;class.ArraySortUtil.php&#39;);
// 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 class="brush:php;toolbar:false">";
 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 "

";

Résumé : Ce qui précède est l'intégralité du contenu de cet article, j'espère qu'il sera utile à l'étude de chacun.

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