php電子郵件表格。 只想發布填充字段，而不想發布空字段

Question

我有一個接觸的形式，看起來像這樣

根據用戶在“我想”選擇框中選擇的內容，將出現不同的表單字段。

我想實施在此站點上找到的解決方案 。 基本上，PHP僅發布已填寫的字段，而不發布為空的字段。 它使用以下代碼來實現它

foreach ($_POST as $Field=>$Value) { 
if($Value != ''){
$body .= "$Field: $Value\n";
}
}

我不精通PHP，也無法應用建議的解決方案。 如果有人可以幫助將解決方案實施到我的代碼中，使它發布包含文本字段，選擇框和單選組的非空表單元素，將不勝感激。

我的PHP表單處理器的代碼如下所示

<?php

$name = $_POST['name'];  
$email_address = $_POST['email'];  
$phone = $_POST['phone'];  
$message = $_POST['message'];  
$p_prefered_day = $_POST['p_prefered_day'];  (radio button)
$session_time = $_POST['session_time'];  (select box)
$p_message = $_POST['p_message'];  
$treatment = $_POST['treatment'];  (select box)
$therapist = $_POST['therapist'];  (select box)
$b_pref_day = $_POST['b_pref_day'];  (radio button)
$b_pref_time = $_POST['b_pref_time'];  (radio button)
$b_message = $_POST['b_message'];  

$to = 'info@zenwebcreative.com.au'; 
$email_subject = "Website Contact Form:  $name";
$email_body = "You have received a new message from your website contact form.\n\n"."Here are the details:\n\nName: $name\n\nCompany: $company\n\nEmail: $email_address\n\nPhone: $phone\n\nMessage:\n$message";
$headers = "From: noreply@yourdomain.com\n";
$headers .= "Reply-To: $email_address"; 

mail($to,$email_subject,$email_body,$headers);
return true;            
?>

我的表單的HTML代碼如下所示

  <form name="sentMessage" id="contactForm" novalidate>                
    <div class="form-group">
      <label>Full Name *</label>
      <input type="text" class="form-control" id="name" required>
    <p class="help-block text-danger"></p>
    </div><!--  end form-group -->

    <div class="form-group">
      <label>Email Address*</label>
      <input type="email" class="form-control" id="email" required>
    <p class="help-block text-danger"></p>
    </div><!--  end form-group -->

    <div class="form-group">
      <label>Contact Number</label>
      <input type="text" class="form-control" id="phone">
    </div> <!-- end form group -->

    <div class="form-group">
    <label>I would like to *</label>
      <select id="select_question" class="form-control">            
        <option selected="selected">Please select</option>
        <option value="question">Ask a question</option>
        <option value="pilates">Attend a pilates class</option>
        <option value="booking">Schedule a booking</option>
      </select>
    </div><!--  end form-group --> 

    <div class="form-group box question">
    <label>Message</label>
      <div class="input-group">                  
        <textarea id="message" class="form-control" rows="7" required></textarea>
        <span class="input-group-addon"><span class="glyphicon glyphicon-asterisk"></span></span>
      </div><!--  end input group -->
    <p class="help-block text-danger"></p>
    </div><!--  end form-group --> 

    <div class="box pilates">

      <div class="form-group">
        <label>Prefered day of the week *</label><br>
        <label class="radio-inline">
          <input type="radio" name="p_prefered_day" id="Tue" value="Tuesday">Tuesday
        </label>
        <label class="radio-inline">
          <input type="radio" name="p_prefered_day" id="Thu" value="Thursday">Thursday
        </label>
      </div> <!-- end form group -->

      <div class="form-group">
      <label>Prefered Session you would like to attend? *</label>
        <select class="form-control" id="session_time">
          <option value="4:30 pm">4:30 pm</option>
          <option value="5:30 pm">5:30 pm</option>
          <option value="6:30 pm">6:30 pm</option>
        </select>
      </div><!--  end form-group --> 

      <div class="form-group">
      <label>Additional Comments</label>
        <div class="input-group">                  
          <textarea id="p_message" class="form-control" rows="7" required></textarea>
          <span class="input-group-addon"><span class="glyphicon glyphicon-asterisk"></span></span>
        </div><!--  end input group -->
      <p class="help-block text-danger"></p>
      </div><!--  end form-group --> 

    </div><!--  end box pilates -->

    <div class="box booking">

      <div class="form-group">
      <label>What Service Are You Interested In? *</label>
        <select class="form-control" id="services">
          <option value="Manual Therapy">Manual Therapy</option>
          <option value="Sports Physiotherapy">Sports Physiotherapy</option>
          <option value="Dry Needling">Dry Needling</option>
          <option value="Post and Pre operative care">Post and Pre operative care</option>
          <option value="Real Time Ultrasound Imaging">Real Time Ultrasound Imaging</option>
          <option value="Balance and Vestibular treatment">Balance and Vestibular treatment</option>
          <option value="Sports Specific Rehabilitation">Sports Specific Rehabilitation</option>
          <option value="Motor Vehicle Accident">Motor Vehicle Accident</option>
          <option value="Workers Compensation">Workers Compensation</option>            
        </select>
      </div><!--  end form-group --> 

      <div class="form-group">
      <label>Which therapist would you like to see*</label>
        <select class="form-control" id="therapist">
          <option selected="selected">No Preference</option>
          <option value="Kristen">Kristen</option>
          <option value="Tara">Tara</option>        
        </select>
      </div><!--  end form-group --> 

      <div class="form-group">
        <label>Prefered day of the week *</label><br>
        <label class="radio-inline">
          <input type="radio" name="b_pref_day" id="b_Mon" value="Mon-">Mon
        </label>
        <label class="radio-inline">
          <input type="radio" name="b_pref_day" id="b_Tue" value="Tue">Tue
        </label>
        <label class="radio-inline">
          <input type="radio" name="b_pref_day" id="b_Wed" value="Wed">Wed
        </label>
        <label class="radio-inline">
          <input type="radio" name="b_pref_day" id="b_Thu" value="Thu">Thu
        </label>
        <label class="radio-inline">
          <input type="radio" name="b_pref_day" id="b_Fri" value="Fri">Fri
        </label>
      </div> <!-- end form group --> 

      <div class="form-group">
        <label>Prefered time of the day</label><br>
        <label class="radio-inline">
          <input type="radio" name="b_pref_time" id="morning" value="Morning">Morning
        </label>
        <label class="radio-inline">
          <input type="radio" name="b_pref_time" id="afternoon" value="Afternoon">Afternoon
        </label>
      </div> <!-- end form group --> 

      <div class="form-group">
      <label>Addtional Comments</label>
        <div class="input-group">                  
          <textarea id="b_message" class="form-control" rows="7" required></textarea>
          <span class="input-group-addon"><span class="glyphicon glyphicon-asterisk"></span></span>
        </div><!--  end input group -->
      <p class="help-block text-danger"></p>
      </div><!--  end form-group --> 

   </div> <!-- end box booking -->

  <div class="clearfix"></div>

    <div id="success"></div>
    <button id="send_btn" type="submit" class="btn cpcbutton">Send Message</button>
    <p class="help-block"> <span class="glyphicon glyphicon-asterisk green"></span> Required Fields </p>
  </form>

提前致謝。

Answer 1

嘗試這個：

$body = "";
foreach ($_POST as $Field=>$Value) { 
    if($Value != ''){
        $body .= "$Field: $Value\n\n";
    }
}

$to = 'info@zenwebcreative.com.au'; 
$email_subject = "Website Contact Form:  $name";
$email_body = "You have received a new message from your website contact form.\n\n"."Here are the details: $body";
$headers = "From: noreply@yourdomain.com\n";
$headers .= "Reply-To: $email_address"; 

mail($to,$email_subject,$email_body,$headers);
return true;            

我替換了所有將$ _POST數組中的變量分配給您提供的代碼段的代碼。 基本上，這和您先前的代碼所做的相同。

Answer 2

您的foreach -loop仍在按原樣工作，但是使用empty()時，代碼看起來更簡潔一些（但是您已經做過的工作！）：

foreach ($_POST as $field=>$value) { 
    if (!empty($value)) {
        $body .= "$field: $value\n\n";
    }
}

這會將全局$_POST -array中不為空的所有變量分配到$body -variable中。 使用此方法，您不需要其他$_POST語句（例如$message = $_POST['message']; ）。 唯一的問題是，將打印$_POST -array中的所有內容（甚至是commit-buttons值！）。

然后你只需把在你的mail功能全是這樣的：

$email_body = "You have received a new message from your website contact form.\n\n";
$email_body .= "Here are the details:\n\n";
$email_body .= "$body";
mail($to, $email_subject, $email_body, $headers);

另一個選擇是顯式檢查每個字段，盡管這將生成更多代碼。

if (!empty($_POST['name']))
    $body .= "Name: ".$_POST['name']."\n\n";
if (!empty($_POST['email']))
    $body .= "Email: ".$_POST['email']."\n\n";
if (!empty($_POST['phone']))
    $body .= "Phone: ".$_POST['phone']."\n\n";

您可以將其添加到郵件功能的方法與此相同。

當然，還有其他處理方式，在這兩種方式中，我建議使用foreach -loop，因為它更少而且更簡潔的代碼也可以完成相同的工作。 如果它也打印“提交”值，則只需添加一段代碼即可跳過全局$_POST數組的該元素。

---

您應該具有防止腳本每次有人直接訪問該頁面時運行，就像有一個聲明if ($_POST['submit'] == 'submit')其中submit的名稱和您呈交的價值HTML表單中的“按鈕”）包裝所有與郵件相關的代碼。 這樣，僅在提交表單后才發送郵件。

Answer 3

您應該創建一個包含接受密鑰的白名單數組：

$whitelist = array('name', 'email', 'phone');

然后如下遍歷數組：

foreach($whitelist as $key){
  if(isset($_POST[$key]) && $_POST[$key] != ''){
    $body .= ucfirst($key) . ": " . htmlspecialchars($_POST[$key], ENT_QUOTES) . "\n";
  }
}

foreach數組， isset檢查是否設置了該字段， ucfirst通過大寫第一個字符使鍵在電子郵件中看起來可顯示，並且帶有ENT_QUOTES標志的htmlspecialchars確保為電子郵件正確轉換了字符。

您應該始終為此循環類型創建白名單，這不僅出於安全目的，還因為您將遍歷不必要或不相關的鍵，例如：

<button type="submit" name="submit" value="1">Submit</button>

然后，您的電子郵件將顯示：

Submit: 1

這對接收者毫無意義。