How to get all selected values from multiple select option?

Question

I have a contact form with multiple select option. But there is only 1 value appear in the email after the contact form submitted. Would like to look for solution to get thi

Answer 1

Use name as like problems[] instead of problems

//Simple Form and getting the values

<form name="s" method="post" action="" >
 <select multiple="multiple" name='problems[]' id='problems' class="inpBox multiple" size='50' style="height:150px;" >
        <option value="Cannot Copy">Cannot Copy</option>
        <option value="Cannot Print">Cannot Print</option>
        <option value="Cannot Print">Cannot Scan</option>
        <option value="Cannot Fax">Cannot Fax</option>
        <option value="Lines Appear When Printing/Copying">Lines Appear When Printing/Copying</option>
        <option value="Scan to Email Failed">Scan to Email Failed</option>
        <option value="Toner Low/Empty">Toner Low/Empty</option>
        <option value="Others">Others</option>
</select>
<input type="submit" name="submit" value="submit" />
</form>


<?php 
if (isset($_POST['submit'])) {
    $problems =  implode(',', $_POST['problems']);
    echo $problems;
}
?>