具有通用性二維數組排序演算法函數
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發布: 2016-07-25 09:01:56
转载地址:
http://blog.qita.in/?post=468
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//二维数组排序, $arr是数据,$keys是排序的健值,$order是排序规则,1是升序,0是降序
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- function array_sort($arr, $keys, $order=0) {
-
- if (!is_array($arr)) {
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- return false;
-
- }
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- $keysvalue = array();
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- foreach($arr as $key => $val) {
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- $keysvalue[$key] = $val[$keys];
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- }
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- if($order == 0){
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- asort($keysvalue);
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- }else {
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- arsort($keysvalue);
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- }
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- reset($keysvalue);
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- foreach($keysvalue as $key => $vals) {
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- $keysort[$key] = $key;
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- }
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- $new_array = array();
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- foreach($keysort as $key => $val) {
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- $new_array[$key] = $arr[$val];
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- }
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- return $new_array;
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- }
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- //eg
- $arr = array('0'=>array('a'=>2,'b'=>4,'c'=>3),
- '1'=>array('a'=>45,'b'=>3,'c'=>3),
- '2'=>array('a'=>2,'b'=>7,'c'=>3),
- );
- $new_array = array_sort($arr,'a',0);
- print_r($new_array);
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