Question

基本上，我有一个有5行的表格。

像这样：

<form action="process.php" method="post">
<p><label>Name</label>
<input type="text" name="name[]"  />
<label>email</label>
<input type="text" name="email[]"   />
</p>
<p><label>Name</label>
<input type="text" name="name[]"  />
<label>email</label>
<input type="text" name="email[]"   />
</p>
<p><label>Name</label>
<input type="text" name="name[]"  />
<label>email</label>
<input type="text" name="email[]"  />
</p>
<p><label>Name</label>
<input type="text" name="name[]"  />
<label>email</label>
<input type="text" name="email[]"  />
</p>
<p><label>Name</label>
<input type="text" name="name[]"  />
<label>email</label>
<input type="text" name="email[]"  />
</p>
<input name="Submit" type="submit" />
</form>

这是我的process.php

<?php
// connect to the database
include('db.php');


$name = count($_POST['name']);
$email = count($_POST['email']);

if ($name > 0 && $name == $email) {
    $insertArr = array();
    for ($i=0; $i<$name; $i++) {
        $insertArr[] = "('" . $_POST['name'][$i] . "', '" . $_POST['email'][$i] . "')";
    }
}



$sql = "INSERT INTO comments(name, email) VALUES " . implode(',', $insertArr) ;
$qry = $conn->prepare ($sql);
$qry->execute($insertArr);



echo("<pre>\n");
print_r($_POST);
echo("</pre>\n");


?>

但是如果用户刚刚输入了4条记录，则第5行没有值，但是它们被保存到数据库中。我想检查用户是否有5个输入，如果没有，那么我必须忽略空并只保存有输入的字段。有谁知道如何做到这一点？我很乐意感谢你的帮助。谢谢。

Answer 1

而不是这两行：

$name = count($_POST['name']);
$email = count($_POST['email']);

替换为：

$name=0;$email=0;
foreach($_POST['name'] as $post_name)
{
    ($post_name!=='')?$name++:''; //checks for empty values and increments accordingly
}

foreach($_POST['email'] as $post_email)
{
    ($post_email!=='')?$email++:'';
}
echo 'name counted = '.$name.'<br>';
echo 'email counted = '.$email.'<br>';

此外，我将此位添加到您的代码中：

if($_POST['name'][$i]!='' || $_POST['email'][$i]!='') //This checks if there is value in name or email of that index, if not it won't enter any blank.
{
 $insertArr[] = "('" . $_POST['name'][$i] . "', '" . $_POST['email'][$i] . "')";
}

Answer 2

您可以在名称数组上使用array_filter来删除所有空值。

$names = array_filter($_POST['name']);
$emails = $_POST['email'];

然后从两个数组中删除那些没有相应匹配的数组，这样只有在输入电子邮件和名称时才会插入。

   $nr = 0;
   foreach ($emails as $e) {
      if (!$names[$nr] || empty($emails[$nr)) unset($emails[$nr]);   
      $nr++;  
   }

清理阵列键

$names = array_values($names);
$emails = array_values($emails);
$i = 0;
foreach ($names as $n) {
   $insertArr[] = "('" . $n . "', '" . $emails[$i] . "')";
   $i++;
}

Answer 3

我看到你想要实现的目标，但如果将来总是5个帖子，你可以像这样解决它：

    $name = $_POST['name0'];
    $email = $_POST['email0'];
    if ((!empty($name))&&(!empty($email))) {
    $mysqli->query("YOUR_SQL_COMMAND");
    echo '<your text>';
    }
    $name = $_POST['name1'];
    $email = $_POST['email1'];
    if ((!empty($name))&&(!empty($email))) {
    $mysqli->query("YOUR_SQL_COMMAND");
    echo '<your text>';
    } // and so on

并将HTML更改为以下内容：

<form action="process.php" method="post">
<p><label>Name</label>
<input type="text" name="name0"  />
<label>email</label>
<input type="text" name="email0"   />
</p>
<p><label>Name</label>
<input type="text" name="name1"  />
<label>email</label>
<input type="text" name="email1"   />
</p>
<p><label>Name</label>
<input type="text" name="name2"  />
<label>email</label>
<input type="text" name="email2"  />
</p>
<p><label>Name</label>
<input type="text" name="name3"  />
<label>email</label>
<input type="text" name="email3"  />
</p>
<p><label>Name</label>
<input type="text" name="name4"  />
<label>email</label>
<input type="text" name="email4"  />
</p>
<input name="Submit" type="submit" />
</form>

插入多个记录并检查一行是否没有记录

3 个答案: