可否根据下面的两个数组来判断趋势

程序员文章站 2024-04-05 17:39:48

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能否根据下面的两个数组来判断趋势？

      
               $old_rank = array(
			"1"=>array('uid'=>132,'use_score'=>61570),
			"2"=>array('uid'=>121,'use_score'=>50932),
			"3"=>array('uid'=>145,'use_score'=>46789),
			"4"=>array('uid'=>100,'use_score'=>39089),
			"5"=>array('uid'=>167,'use_score'=>29089)
		);
		$new_rank = array(
			"1"=>array('uid'=>132,'use_score'=>61570),
			"2"=>array('uid'=>145,'use_score'=>51932),
			"3"=>array('uid'=>121,'use_score'=>50932),
			"4"=>array('uid'=>167,'use_score'=>40089),
			"5"=>array('uid'=>100,'use_score'=>39089)
		);

这样的两个数组，怎么进行比对得出排名的趋势，比如用户145排名上升一位了，121排名下降一位了，132排名保持不变。

php

分享到：
------解决方案--------------------

$old_rank = array(
  "1"=>array('uid'=>132,'use_score'=>61570),
  "2"=>array('uid'=>121,'use_score'=>50932),
  "3"=>array('uid'=>145,'use_score'=>46789),
  "4"=>array('uid'=>100,'use_score'=>39089),
  "5"=>array('uid'=>167,'use_score'=>29089)
);
$new_rank = array(
  "1"=>array('uid'=>132,'use_score'=>61570),
  "2"=>array('uid'=>145,'use_score'=>51932),
  "3"=>array('uid'=>121,'use_score'=>50932),
  "4"=>array('uid'=>167,'use_score'=>40089),
  "5"=>array('uid'=>100,'use_score'=>39089)
);
foreach($old_rank as $k=>$v) $old[$v['uid']] = $k;
foreach($new_rank as $k=>$v) $new[$v['uid']] = $k;

foreach($new as $k=>$v)
  echo "$k 排名 $v " . ($v - $old[$k]) . '
';