用于打印MYSQLi数组的PHP循环无法正常工作

所以现在的情况是，我正在将mysql数据库中的4行打印到一个div中，然后关闭该div，然后创建一个新div，然后打印4行，然后结束该div。依此类推，直到我的数据库中不再有任何内容

现在完成后，它将打印一个表单，用户可以在该表单中添加到DB（打印姓氏后riht）（如果一个div中已经有4个名称，那么它将不得不创建另一个div） 下面的代码是我目前拥有的，它可以工作，但是它有一些问题。 这些问题是： -数据库的第一个条目未打印，它从第二个条目开始打印。 -在打印完所有名称后，它将打印内容

div

，但其中没有名称。（其中1或2名） -如果一个div中已有4个名称，则表单不会为表单创建另一个div

通过摆弄

$count2

变量，我可以让它去掉那些空的content div，但是随后我就失去了提交按钮的功能（它就在那里，但是你不能点击它）

有人能发现并纠正问题所在吗

谢谢大家

顺便说一句，我尽我所能地发表评论，以便你们能理解我认为应该发生的事情

$countsql = <<<SQL
            SELECT *
            FROM `deathnote`
SQL;

if ($stmt = mysqli_prepare($db, $countsql)) {

    /* execute query */
    mysqli_stmt_execute($stmt);

    /* store result */
    mysqli_stmt_store_result($stmt);

    $countresult = mysqli_stmt_num_rows($stmt);
}
$count2=0; //count how many overall names have been printed
$pagecount=0; //count for how many names are on a page
while($result->fetch_assoc() != NULL){ //While result isn't empty
 echo '<div style="background-image:url(images/paper.jpg);">'; //start new page div
    while ($pagecount < 4) { //loop to put only 4 names on 1 page
    $row = $result->fetch_assoc(); //grab name and cod
                echo '<div class="content"><div class="name">'  . $row['victim'] . '</div><div class="cod">'  . $row['cod'] . '</div></div>'; //display name and cod inside a content div
        $pagecount++; //increase the count of amount of names on page
        $count2++; //increase the overall names printed
        if ($count2 == $countresult) { //if the overall names printed = the total count of whats in the database (meaning there is nothing left to print)
        echo '<div class="content"><form action="write.php" method="post"><div class="name">Name: <br/> Cause Of Death: </div><div class="cod"><textarea type="text" name="name" maxlength="25" placeholder="Input Name" required></textarea> <br /> <textarea type="text" name="cod" maxlength="130" rows="4" placeholder="Cause of Death" required></textarea> <br /><input type="submit" id="button" value="Submit"></div></form></div>'; //print the form for user to add to the database
        }

    }
$pagecount=0; //because there is 4 names printed, we have to set the count back to 0
echo '</div>'; //end the 'page' div (which will end the page)
}

// initialize record counter
$count=0;

// loop through query result
while($row->fetch_assoc($stmt)){

    // increment record counter
    $count++;

    // if this is the first record in this group, start a new page div
    if ($count==1) {
      ?><div style="background-image:url(images/paper.jpg);"><?php
    }

    //display name and cod inside a content div
    ?><div class="content">
      <div class="name"><?=$row['victim']?></div>
      <div class="cod"><?=$row['cod']?></div>
    </div><?php

    // if this is fourth record in group, close page div and reset counter
    if ($count==4) {
      ?></div><?php
      $count=0;
    }

}

// if the last group had less than four items, close final page div.
if ($count>0) {
  ?></div><?php
}

//print the form for user to add to the database
?><div class="content">
    <form action="write.php" method="post">
        <div class="name">
            Name:<br/>
            Cause Of Death:
        </div>
        <div class="cod">
            <textarea type="text" name="name" maxlength="25" placeholder="Input Name" required></textarea><br />
            <textarea type="text" name="cod" maxlength="130" rows="4" placeholder="Cause of Death" required></textarea><br />
            <input type="submit" id="button" value="Submit">
        </div>
    </form>
</div>

---

$countsql=如果我理解正确，数据库记录应该以四条记录为一组输出，直到没有更多记录为止

将数据库内容提取到一个数组中，然后遍历该数组可能更容易

但是，这里有一个与您上面提供的代码类似的方法。

对代码进行注释是为了解释发生了什么

$countsql = <<<SQL
            SELECT *
            FROM `deathnote`
SQL;

if ($stmt = mysqli_prepare($db, $countsql)) {

    /* execute query */
    mysqli_stmt_execute($stmt);

    /* store result */
    mysqli_stmt_store_result($stmt);

    $countresult = mysqli_stmt_num_rows($stmt);
}
$count2=0; //count how many overall names have been printed
$pagecount=0; //count for how many names are on a page
while($result->fetch_assoc() != NULL){ //While result isn't empty
 echo '<div style="background-image:url(images/paper.jpg);">'; //start new page div
    while ($pagecount < 4) { //loop to put only 4 names on 1 page
    $row = $result->fetch_assoc(); //grab name and cod
                echo '<div class="content"><div class="name">'  . $row['victim'] . '</div><div class="cod">'  . $row['cod'] . '</div></div>'; //display name and cod inside a content div
        $pagecount++; //increase the count of amount of names on page
        $count2++; //increase the overall names printed
        if ($count2 == $countresult) { //if the overall names printed = the total count of whats in the database (meaning there is nothing left to print)
        echo '<div class="content"><form action="write.php" method="post"><div class="name">Name: <br/> Cause Of Death: </div><div class="cod"><textarea type="text" name="name" maxlength="25" placeholder="Input Name" required></textarea> <br /> <textarea type="text" name="cod" maxlength="130" rows="4" placeholder="Cause of Death" required></textarea> <br /><input type="submit" id="button" value="Submit"></div></form></div>'; //print the form for user to add to the database
        }

    }
$pagecount=0; //because there is 4 names printed, we have to set the count back to 0
echo '</div>'; //end the 'page' div (which will end the page)
}

// initialize record counter
$count=0;

// loop through query result
while($row->fetch_assoc($stmt)){

    // increment record counter
    $count++;

    // if this is the first record in this group, start a new page div
    if ($count==1) {
      ?><div style="background-image:url(images/paper.jpg);"><?php
    }

    //display name and cod inside a content div
    ?><div class="content">
      <div class="name"><?=$row['victim']?></div>
      <div class="cod"><?=$row['cod']?></div>
    </div><?php

    // if this is fourth record in group, close page div and reset counter
    if ($count==4) {
      ?></div><?php
      $count=0;
    }

}

// if the last group had less than four items, close final page div.
if ($count>0) {
  ?></div><?php
}

//print the form for user to add to the database
?><div class="content">
    <form action="write.php" method="post">
        <div class="name">
            Name:<br/>
            Cause Of Death:
        </div>
        <div class="cod">
            <textarea type="text" name="name" maxlength="25" placeholder="Input Name" required></textarea><br />
            <textarea type="text" name="cod" maxlength="130" rows="4" placeholder="Cause of Death" required></textarea><br />
            <input type="submit" id="button" value="Submit">
        </div>
    </form>
</div>

//初始化记录计数器
$count=0；
//循环查询结果
while（$row->fetch_assoc（$stmt））{
//增量记录计数器
$count++；
//如果这是此组中的第一条记录，请启动一个新的页面div
如果（$count==1）{
?>
名称：

死因：





您的问题：
1.数据库的第一个条目未打印，它从第二个条目开始打印。


这是因为您有两个嵌套的“fetch”循环，您只需要一个

2.在打印完所有名称后，它会打印内容div，但其中没有名称。


这是因为在“fetch”循环中有一个“page count”循环。

因此，即使在最后一条记录上，它仍然输出四个内容框

3.如果一个div中已有4个名称，则表单不会为表单创建另一个div。


这是因为表单输出依赖于包含四个项的最后一个组