我有几个学生在php数组中得分。
$ firstarray:
Array (
[0] => Array (
[6] => Array ( //I want to skip this student from ranking
[ENGLISH] => 45.00
[MATHEMATICS] => 5.00
[SCIENCE] => 40.00
)
)
[1] => Array (
[7] => Array (
[ENGLISH] => 41.00
[MATHEMATICS] => 40.00
[SCIENCE] => 47.00
)
)
)
[2] => Array (
[8] => Array (
[ENGLISH] => 42.00
[MATHEMATICS] => 44.00
[SCIENCE] => 40.00
)
)
[3] => Array (
[9] => Array (
[ENGLISH] => 42.00
[MATHEMATICS] => 25.00
[SCIENCE] => 31.00
)
)
)
在另一个数组中,我有每个学生得分的总得分。:
$ secondarray:
Array ( [7] =>
Array (
[score] => 128
[rank] => 1
)
[8] =>
Array (
[score] => 126
[rank] => 2
)
[9] =>
Array (
[score] => 98
[rank] => 3
)
[6] =>
Array (
[score] => 90
[rank] => 4
)
)
在取出所有科目中的学生总得分后,我使用以下PHP代码来计算得分的排名:
$ totalmarkscore:
Array (
[0] => Array (
[6] => 90
)
[1] => Array (
[7] => 128
)
[2] => Array (
[8] => 126
)
[3] => Array (
[9] => 98
)
)
$rankchu =array();
foreach($totalmarkscore as $k => $vl){
if(is_array($vl)){
foreach($vl as $hlutna =>$ken){
$rankchu[$hlutna]= $ken;
}
}
}
$secondarray = setRankings($rankchu);
我的问题是:我如何跳过计算每个科目没有得到最少15分的学生的等级?但是我仍然希望向学生展示得分细节,我只是想从排名中跳过它然后保持排名顺序。在上面的例子中,我想跳过id = 6的学生,因为他没有从排名计算得到数学中的最小15分(他只得到5分),其他东西保持不变。 请帮忙。感谢。
答案 0 :(得分:5)
当你处理$firstarray
时,你需要保留任何分数是否低于15的信息。这里我们添加一个can_be_scored
标志来存储:
$totalmarkscore = array_reduce(
$firstarray,
function($result, $item) {
$id = key($item);
$scores = $item[$id];
$result[$id] = array(
"score" => array_sum($scores),
"can_be_scored" => min($scores) >= 15
);
return $result;
},
array()
);
有了这个,$totalmarkscore
应该是这样的:
Array (
[7] =>
Array (
[score] => 128
[can_be_scored] => true
)
[8] =>
Array (
[score] => 126
[can_be_scored] => true
)
[9] =>
Array (
[score] => 98
[can_be_scored] => true
)
[6] =>
Array (
[score] => 90
[can_be_scored] => false
)
)
然后,在setRankings
中,您可以检查是否$item["can_be_scored"]
并排除该项目是否为假。