如何将多维数组转换为mysql表

Question

我有以下代码以多维数组的形式创建修订时间表。每个部分代表一天和每小时一个要修改的时间段。我试图将这个多维数组转换为 mysql 中的一个表，以便时间表对用户友好并且可以保存等等。这是用于生成时间表以及生成的时间表的代码。

<?php
if(!isset($_POST['subjects'])) {
    header('Location: index.php');
}
define('DAY_LENGTH', 12);
$timetable = [];
foreach ($_POST as $subject => $n) {  // add in the required amount of subjects
    $timetable = array_merge($timetable, array_fill(0, $n, $subject));
}
$timetable = array_merge($timetable, array_fill(0, DAY_LENGTH * 7 - count($timetable), ''));  // fill the array with empty values
shuffle($timetable);  // shuffle the set
$timetable = array_chunk($timetable, DAY_LENGTH);  // split it into 7 days

echo '<pre>';
var_dump($timetable);
echo '</pre>';

这是数组结构，它有 7 个子数组，但我只显示了前 2 个以节省时间。每个子数组代表一周中的一天，即 [0] 将是星期一，其中的每个数组是一天中的时间，后跟一个主题，即 [8] = 8pm 和物理

    array(7) {
  [0]=>
  array(12) {
    [0]=>
    string(0) ""
    [1]=>
    string(9) "Computing"
    [2]=>
    string(7) "Physics"
    [3]=>
    string(7) "Physics"
    [4]=>
    string(7) "Physics"
    [5]=>
    string(5) "Maths"
    [6]=>
    string(7) "Physics"
    [7]=>
    string(7) "Physics"
    [8]=>
    string(7) "Physics"
    [9]=>
    string(7) "Physics"
    [10]=>
    string(7) "Physics"
    [11]=>
    string(7) "Physics"
  }
  [1]=>
  array(12) {
    [0]=>
    string(7) "Physics"
    [1]=>
    string(9) "Computing"
    [2]=>
    string(7) "Physics"
    [3]=>
    string(7) "Physics"
    [4]=>
    string(7) "Physics"
    [5]=>
    string(7) "Physics"
    [6]=>
    string(5) "Maths"
    [7]=>
    string(7) "Physics"
    [8]=>
    string(7) "Physics"
    [9]=>
    string(7) "Physics"
    [10]=>
    string(7) "Physics"
    [11]=>
    string(5) "Maths"
  }

Answer 1

通过双循环，您可以访问所需的参数。

例如：

foreach ($timetable as $day => $subTimetable) {
    foreach ($subTimetable as $hour => $subject) {
        $sql = "INSERT INTO `table` (`day`, `hour`, `subject`) VALUES (:day, :hour, :subject);";
        $values = array(
            'day' => $day,
            'hour' => $hour,
            'subject' => $subject
        );
        // Execute insert here
    }
}