PHP联系表格，带下拉菜单以更改电子邮件

Question

我正在使用带有下拉菜单的联系表来选择要发送给特定医生的电子邮件地址。 我使用的是模板，并且在PHP中没有很多经验。 将表单上传到服务器时，出现“警告：array_key_exists（）的参数计数错误”，但我无法查明问题。

<link href="css/contactform.css" rel="stylesheet" type="text/css" />
<?php

// Set email variables
$email_to = array('phys1' => 'phys1@xxxxxx.xxx', 'phys2' => 'phys2@xxxxxx.xxx');
if(array_key_exists($_POST['dropdown']))
{
$recipient = $emails[$_POST['dropdown']];
//send email to $recipient
}

$email_subject = 'Form submission';

// Set required fields
$required_fields = array('fullname','email','comment');

// set error messages
$error_messages = array(
'fullname' => 'Please enter a Name to proceed.',
'email' => 'Please enter a valid Email Address to continue.',
'comment' => 'Please enter your Message to continue.'
);

// Set form status
$form_complete = FALSE;

// configure validation array
$validation = array();

// check form submittal
if(!empty($_POST)) {
// Sanitise POST array
foreach($_POST as $key => $value) $_POST[$key] = remove_email_injection(trim($value));

// Loop into required fields and make sure they match our needs
foreach($required_fields as $field) {       
    // the field has been submitted?
    if(!array_key_exists($field, $_POST)) array_push($validation, $field);

    // check there is information in the field?
    if($_POST[$field] == '') array_push($validation, $field);

    // validate the email address supplied
    if($field == 'email') if(!validate_email_address($_POST[$field])) array_push($validation, $field);
    }

// basic validation result
if(count($validation) == 0) {
    // Prepare our content string
    $email_content = 'New Website Comment: ' . "\n\n";

    // simple email content
    foreach($_POST as $key => $value) {
        if($key != 'submit') $email_content .= $key . ': ' . $value . "\n";
    }

    // if validation passed ok then send the email
    mail($email_to, $email_subject, $email_content);

    // Update form switch
    $form_complete = TRUE;
}
}

function validate_email_address($email = FALSE) {
return (preg_match('/^[^@\s]+@([-a-z0-9]+\.)+[a-z]{2,}$/i', $email))? TRUE : FALSE;
}

function remove_email_injection($field = FALSE) {
   return (str_ireplace(array("\r", "\n", "%0a", "%0d", "Content-Type:", "bcc:","to:","cc:"), '', $field));
}

?>

<script type="text/javascript">
    var nameError = '<?php echo $error_messages['fullname']; ?>';
    var emailError = '<?php echo $error_messages['email']; ?>';
    var commentError = '<?php echo $error_messages['comment']; ?>';
</script>

</head>
<div id="formWrap">
<div id="form">
<?php if($form_complete === FALSE): ?>
<form action="/contact.php" method="post" id="comments_form">
    <div class="row">
    <div class="label">Name</div>
    <div class="input">
    <input type="text" id="fullname" class="detail" name="fullname" value="<?php echo isset($_POST['fullname'])? $_POST['fullname'] : ''; ?>" /><?php if(in_array('fullname', $validation)): ?><span class="error"><?php echo $error_messages['fullname']; ?></span><?php endif; ?>
    </div>
    <div class="context"></div>

    <div class="row">
    <div class="label">Your E-mail</div>
    <div class="input"><input type="text" id="email" class="detail" name="email" value="
<?php echo isset($_POST['email'])? $_POST['email'] : ''; ?>" />
<?php if(in_array('email', $validation)): ?><span class="error"><?php echo $error_messages['email']; ?></span><?php endif; ?>
    </div>
    <div class="context"></div>

    <div class="row">
    <div class="label">Select Physician</div>
    <div class="input"><select name='dropdown' >
<option value=''>

    --Select--</option>
<option value='phys1'>

    phys1</option>
<option value='phys2'>

    phys2</option>
<option value='phys3'>

    phys3</option>
</select>       </div>
    <div class="context"></div>


    <div class="row">
    <div class="label">

     Your Message</div>
    <div class="input">
    <textarea id="comment" name="comment" class="mess"><?php echo isset($_POST['comment'])? $_POST['comment'] : ''; ?></textarea><?php if(in_array('comment', $validation)): ?><span class="error"><?php echo $error_messages['comment']; ?></span><?php endif; ?>
    </div>
    </div>  
    <div class="submit"></div>
    <input type="submit" id="submit" name="submit" value="Send Message" />
</div>
</form>
<?php else: ?>
<p>

    Thank you for your message!</p>
 <?php endif; ?>
</div>
</div>
</div>
</div>
</div>
</div>  
</div>  
</body>
</html>

表格上传到这里： http://endotest.zxq.net/contact_test.php

Answer 1

如果查看array_key_exists的文档，您会注意到该函数带有两个参数。 一个键（数组键）和一个数组（您要搜索相关数组键/索引的数组）。

您的代码：

if(array_key_exists($_POST['dropdown']))

是问题。 您可能的意思是：

if(array_key_exists($_POST['dropdown'], $emails))

Answer 2

尝试用isset替换array_key_exists ，看看是否适合您

if(isset($_POST['dropdown']))
{
    $recipient = $emails[$_POST['dropdown']];
    //send email to $recipient
}