Question

修订版：我正在尝试处理表单，对其进行验证并向这些收件人发送电子邮件。

<form>
<input name="name1"> <input email="email1">
<input name="name2"> <input email="email2">
<input name="name3"> <input email="email3">
....
<input type="submit" name="submit">

</form>

我试图做的不是做多次输入，而是像这样使用for循环。

<form method=GET action="">
<?php 
for($i = 1; $i <= 10; $i++)
{
    echo 'First name: <input name="firstname[$i]">';
    echo 'Last name:<input name="lastname[$i]">';
    echo 'Email: <input name="email[$i]"><br>';
}
?>
   <input type="submit" name="Submit" value="Submit">
</form>

<?php
$msg = "a message";
$subject = "a subject";

foreach($_POST['email'] as $email){        
    mail($email, $subject,$msg,'From: ' . $_POST['sendername'] . "\n\r" );
}
?>

我的问题是我不确定验证这些字段的最佳方法是什么。任何指针都会有所帮助。我不是程序员，我只是一个初学者。

Answer 1

修改

以下答案是针对OP在编辑之前提出的原始问题。

原始问题：https://stackoverflow.com/revisions/18454820/1

这条线存在问题：

echo '<input type="text" name="firstname[]" size="20" value=".(if (isset($_POST['firstname'][$i])) { print htmlspecialchars($_POST['firstname'][$i]); })." />';

并被替换为:(使其工作）

echo '<input type="text" name="firstname[]" size="20" />';

另外，我将您的表单操作替换为action=""

工作代码：

<!DOCTYPE html>
<html>
<head>
<title>PHP FORM </title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div id="container">

<?php 

// Print some introductory text:
print '<h2>Party Invitation Form</h2>
<p>Please enter list of people with first name, last name and email address to get an invitation by email.</p>';


// Check if the form has been submitted:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {

$problem = FALSE; // No problems so far.

// Check for each value...
 for ($i = 0; $i < count($_POST['email']); $i++) {

if (empty($_POST['firstname'][$i])) {
    $problem = TRUE;

    echo '<input type="text" name="firstname[]" size="20" />';

}

if (empty($_POST['lastname'][$i])) {
    $problem = TRUE;
}

if (empty($_POST['email'][$i]) || (substr_count($_POST['email'][$i], '@') != 1) ) {
    $problem = TRUE;
}

   }


if (!$problem) { // If there weren't any problems...

    // Print a message:
    echo '<p><b>Thank you for registering! We will send each one an invitation:          <b> </b></p>';
    for ($i = 0; $i < count($_POST['email']); $i++) {
        echo $_POST['firstname'][$i]." ".$_POST['lastname'][$i]."  ".$_POST['email'][$i]."    <br/>";

    // Send the email:

    $body = "Thank you {$_POST['firstname'][$i]} for registering with the blah   blah blah blah!";
    mail($_POST['email'][$i], 'Party Invitation', $body, 'From: email@example.com');
    }
    // Clear the posted values:
    $_POST = array();

} else { // Forgot a field.

    print '<p id="error">* Required field! Please try again. Thank you.</p>';

}

  } // End of handle form IF.

 // Create the form:
 ?>




 <form action="" method="post">
 <table>
  <tr>
 <td>First name:</td>
<td>Last name:</td>
<td>Email:</td>
</tr>
<?php for ($i = 0; $i < 2; $i++) { ?>
<tr>
<td><?php if ($problem == TRUE) { echo '<p id="error">*'; } ?>

<input type="text" name="firstname[]" size="20" value="<?php if (isset($_POST['firstname'][$i])) { print htmlspecialchars($_POST['firstname'][$i]); } ?>" />

</td>
<td><?php if ($problem == TRUE) { echo '<p id="error">*'; } ?>
<input type="text" name="lastname[]" size="20" value="<?php if (isset($_POST['lastname'] [$i])) { print htmlspecialchars($_POST['lastname'][$i]); } ?>" />
</td>
<td><?php if ($problem == TRUE) { echo '<p id="error">*'; } ?><input type="text"  name="email[]" size="20" value="<?php if (isset($_POST['email'][$i])) { print htmlspecialchars($_POST['email'][$i]); } ?>" />
</td>

</tr>
<?php } ?>
<tr><td><p><input type="submit" class="button" name="submit" value="Register!" /></td>
</tr>
</table>
</form>
</div>
</body>
</html>

使用外部文本文件邀请PHP表单

1 个答案:

修改

工作代码：