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【PHP】具有通用性二维数组排序算法函数

作者:qita.in / 发布于2012/10/22/ 636

具有通用性二维数组排序算法函数

<div><?php</div>
<div>//二维数组排序， $arr是数据，$keys是排序的健值，$order是排序规则，1是升序，0是降序</div>
<div></div>
<div>function array_sort($arr, $keys, $order=0) {</div>
<div></div>
if (!is_array($arr)) {</div>
<div></div>
<div>  return false;</div>
<div></div>
<div>}
<div></div>
<div>$keysvalue = array();</div>
<div></div>
<div>foreach($arr as $key => $val) {</div>
<div></div>
<div> $keysvalue[$key] = $val[$keys];</div>
<div></div>
<div>}
<div></div>
if($order == 0){</div>
<div></div>
<div>  asort($keysvalue);</div>
<div></div>
<div>}else {</div>
<div></div>
<div>  arsort($keysvalue);</div>
<div></div>
<div>}
<div></div>
<div>reset($keysvalue);</div>
<div></div>
<div>foreach($keysvalue as $key => $vals) {</div>
<div></div>
<div>  $keysort[$key] = $key;</div>
<div></div>
<div>}
<div></div>
<div>$new_array = array();</div>
<div></div>
<div>foreach($keysort as $key => $val) {</div>
<div></div>
<div>  $new_array[$key] = $arr[$val];</div>
<div></div>
<div>}
<div></div>
<div>return $new_array;</div>
<div></div>
<div>}
<div></div>
<div>//eg</div>
<div>$arr = array('0'=>array('a'=>2,'b'=>4,'c'=>3),</div>
<div>      '1'=>array('a'=>45,'b'=>3,'c'=>3),</div>
<div>      '2'=>array('a'=>2,'b'=>7,'c'=>3),</div>
<div>);</div>
<div>$new_array = array_sort($arr,'a',0);</div>
<div>print_r($new_array);</div>

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　排序算法　

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