PHP Average of subkeys in an array(数组中的子键的PHP平均值)
问题描述
Array (
[JohnDoe] => Array (
[id] => 23
[name] => JohnDoe
[logintimes] => 30
)
[JaneDoe] => Array (
[id] => 26
[name] => JaneDoe
[logintimes] => 9
)
[Smith] => Array (
[id] => 35
[name] => Smith
[logintimes] => 9
)
)
如何将登录时间彼此相加(然后求出它们的平均值?)
推荐答案
循环和获取非常简单
$counter = 0;
$total = 0;
foreach($array as $row) {
$counter++;
$total += $row['logintimes'];
}
echo $total / $counter;
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