如何获取foreach循环内的rank值？

Question

I'm trying to get the rank in each school which is by the way already in asc order. for example, I want to print ONLY the rank of schoolToRank[0] outside the foreach loop. This is my code on getting the rank in ALL schools by cost, population and topnotchers:

    $rankedCost = setter_asc($test);
$rankedPopulation = setter_desc(setter_desc($user_selected_population));
$rankedTopN = setter_desc(setter_desc($user_selected_top));
$echo= ''; 
foreach($rankedCost as $school_toRank => $data){
      echo '(school = '.$school_toRank . ' is rank = ' . $data['rank']. ')';
}
echo "<br>";
foreach($rankedPopulation as $school_toRank => $data){
      echo '(school = '.$school_toRank . ' is rank = ' . $data['rank']. ')';
}
echo "<br>";
foreach($rankedTopN as $school_toRank => $data){
      echo '(school = '.$school_toRank . ' is rank = ' . $data['rank']. ')';
}

This is the result of the above code:

So for example in school 2, rank is 1- How do I access it individually to show only that school with that rank (outside foreach loop)?

Answer 1

您可以使用asort方法，通过等级排序

Answer 2

只需在数组上使用索引：

$rankedCost[2]['rank']