电子邮件html多个选择框值

I am creating a basic web form. I am having trouble with the multiple select box. Here is my html code:

 <select multiple="multiple" name="specialties[]">
  <option value="Item 1">Item 1</option>
  <option value="Item 2">Item 2</option>
  <option value="Item 3">Item 3</option>
  <option value="Item 3">Item 4</option>
</select>

I am having the form email the results on the PHP side once it's submitted. I know it's a little more involved than $specialties = $_POST['specialties'];

Since this is an array, I can't seem to get it to email the results. I know my form and email results work, it's just this variable. Any help is greatly appreciated.

Try imploding the Array to create a comma separated string:

$specialties = Trim(stripslashes(implode(",", $_POST['specialties'])));

<select multiple="multiple" name="specialties[]">
<option value="Item 1">Item 1</option>
  <option value="Item 2">Item 2</option>
  <option value="Item 3">Item 3</option>
  <option value="Item 3">Item 4</option>
</select>

and your post

foreach ($_POST['specialties'] as $selectedOption)
    echo $selectedOption."
";

Does this work?