我有一个名为view.htm
的页面,根据用户分配给金牌,银牌和铜牌的结果显示结果,以及他们是否选择使用gdp或人口来计算得分从view.php
。我需要找到一种方法,以通过计算得分排序这些结果,然后将其限制在排名前10的。我的数据是从MySQL数据库中接收到的,分数是在php页面中计算的。我正在使用json_encode
对数据进行编码以在页面上显示它。 $results
是一个二维数组。这是结果是什么,当你从view.php呼应出来,如:如何使用计算值来排序数组,其中从mysql数据库接收其余数据?
{"gold":"0","silver":"0","bronze":"1","gdp":"20343461030","population":"34385000",
"country_name":"Afghanistan","score":"0.029082448742184"},{"gold":"0",
"silver":"0","bronze":"0","gdp":"12959563902","population":"3205000",
"country_name":"Albania","score":"0"},{"gold":"1","silver":"0","bronze":"0",
"gdp":"188681000000","population":"35468000","country_name":"Algeria",
"score":"0.14097214390436"}
下面是用于计算得分的PHP代码:
$results = array();
while ($row = $res->fetchRow()){
$resGold = $row['gold'];
$resSilver = $row['silver'];
$resBronze = $row['bronze'];
$resGdp = $row['gdp'];
$resPopulation = $row['population'];
$resCountry = $row['country_name'];
$gold_score = ($resGold * $gold_value);
$silver_score = ($resSilver * $silver_value);
$bronze_score = ($resBronze * $bronze_value);
$total_medals = ($resGold + $resSilver + $resGold);
$perMillion = $resPopulation/1000000;
$perBillion = $resGdp/1000000000;
$score_pop = (($gold_score + $silver_score + $bronze_score)/$perMillion);
$score_gdp = ($perBillion/($gold_score + $silver_score + $bronze_score + 1));
if($population == 'true'){
$row['score'] = "$score_pop";
array_push($results,$row);
}
else if($gdp == 'true'){
$row['score'] = "$score_gdp";
array_push($results,$row);
}
}
任何帮助表示赞赏。 谢谢
它没有订购它 – 2013-05-08 15:36:49