Question

对PHP很新，我试图实现某些目标，我认为可以在c＃中轻松完成。但是在PHP中，这对我来说并不容易实现。

当迭代XML文件时，我想存储每年的所有平均分数。这些年份将是独一无二的，分数应该是他们的价值观。

输出应该是：

[＆＃39; 2012＆＃39;] =＆gt;阵列（8.1,7.3,8.8）
  [＆＃39; 2013＆＃39;] =＆gt;阵列（6.7,7.7,5.5）
  [＆＃39; 2014＆＃39;] =＆gt;数组（2.3,7.9,9.9）

通过这种方式，我可以获得2014年的所有平均分数等。在c＃中我会创建一个包含List的字典，如：

var yearScores = new Dictionary<string, List<Decimal>>();

我当前的PHP代码如下：

$yearScores = array(array());
foreach($xml->results->children() as $result) {
        //Reset variables
        $current_date = null;
        $current_average = null;

        //Iterate over all 'answer' children in result
        foreach($result->children() as $answer) {
            //Retrieve Date and Average
            if($average[0]['name'] == "date") {
                $current_date = date('Y', strtotime($answer));
            }
            if($average[0]['name'] == "average") {
                $current_average = $answer;
            }
        }

        //Validate if we found both current Date and current Average
        if(is_null($current_date) || is_null($current_average)) continue;

        //The Date and Average exist
        //See if the Datum already exists in our array
        if(!in_array($current_date, $yearScores)) {
            $yearScores[] = $current_date;
        }
        //The average should be added to the correct year in the array here.
}

如何将分数添加到$ yearScores数组中的正确年份数组？

Answer 1

您可以按照以下方式执行此操作：

// no need to initialize multidimensional array here
$yearScores = array();

foreach($xml->results->children() as $result) {

    foreach($result->children() as $answer) {
        //Retrieve Date and Average
        // This here does not look right to me
        if($average[0]['name'] == "date") {
            $current_date = date('Y', strtotime($answer));
        }
        if($average[0]['name'] == "average") {
            $current_average = $answer;
        }

        if(!isset($yearScores[$current_date])) {
            $yearScores[$current_date] = array($current_average);
        } else {
            array_push($yearScores[$current_date], $current_average);
        }
    }
}

我不确定if但是（查看我的评论）。你检查过它们的输出是否正确吗？

数组

1 个答案: