这篇文章主要介绍了php专用数组排序类arraysortutil用法,实例分析了arraysortutil实现数组排序的方法与对应使用技巧,需要的朋友可以参考下
本文实例讲述了php专用数组排序类arraysortutil用法。具体如下：
** * 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 $sorted; }}
使用范例如下：
<?phprequire_once('class.arraysortutil.php');// declare test data$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 "<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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以上就是php基于arraysortutil实现数组排序的方法的详细内容。