php - 只能插入第一个和第二个值，其他值不能插入数据库中。怎么解决这个问题？

Question

  <?php
   require_once "config.php";
   if(isset($_POST['save'])){
   $values = array();
   for($i=0 ; $i <count($_POST['working']); $i++) {
    $values[] = '("' . $_POST['working']['day'][$i] . '","' . 
    $_POST['working']['status'][$i] . '")'; }
    $sql4 = "INSERT INTO working_day(day,status) VALUES " . implode(',', 
    $values);
    $result4=mysqli_query($connection,$sql4);}
   ?>
<form id="sendform" method="post" action="">

<input type="text" value="Monday" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]" />


<input type="text" value="Tuesday" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]" />

<input type="text" value="w" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]"  />

<input type="text" value="T" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]"  />

<input type="text" value="F" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]" />

<input type="text" value="S" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]"  />

<input type="text" value="S" id="day" name="working[day][]" readonly />
<input type="text" value="" id="status" name="working[status][]" />

<input type="submit" value="Send" name="save" />
</form>

**为什么这段代码只能将第一天&状态和第二天&状态插入数据库？ for 循环 count[i] 无法计算另一个值。如何解决这个问题呢？ **

Answer 1

正确的方法如下:-

<?php
require_once "config.php";
if(isset($_POST['save'])){
    $values = array();
    for($i=0 ; $i <count($_POST['working']['day']); $i++) {
        $values[] = '("' . $_POST['working']['day'][$i] . '","' . $_POST['working']['status'][$i] . '")'; 
    }
    $sql4 = "INSERT INTO working_day(day,status) VALUES " . implode(',', $values);
    $result4=mysqli_query($connection,$sql4);
}