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    <p>To allow multiple checkbox values, you must add <code>[]</code> to the name attribute. PHP will then treat it as an array:</p> <pre><code>&lt;input type=checkbox name="valid_license[]" id="valid_license" ... /&gt; </code></pre> <p>Then be sure to process them as an array. Your <code>$this-&gt;valid_license</code> becomes an array as well.</p> <pre><code>// Something like foreach ($_POST['valid_license'] as $license) { // Append each sanitized element onto valid_license[] $this-&gt;valid_license[] = $this-&gt;Sanitize($license); } </code></pre> <p>Note, that you must supply different <code>id=</code> attributes to each one. The HTML spec requires than id attributes be unique. Right now, all of yours have <code>id='valid_license'</code>. Change them to <code>id='valid_license1'</code> or similar.</p> <h3>Update (modifying function)</h3> <pre><code>function ComposeFormtoEmail() { $header = $this-&gt;GetHTMLHeaderPart(); $formsubmission = $this-&gt;FormSubmissionToMail(); $extra_info = $this-&gt;ExtraInfoToMail(); $footer = $this-&gt;GetHTMLFooterPart(); // Assign this to a variable $licenses = implode(", ", $this-&gt;valid_license); // Then insert that variable into `$message` $message = $header."Job Application Submission From thermosealinsulation.ca :&lt;p&gt;$licenses&lt;/p&gt;&lt;p&gt;$formsubmission&lt;/p&gt;&lt;hr/&gt;$extra_info".$footer; //---------------------------------------------------------------------------^^^^^^^^^^^^^^^^ return $message; } </code></pre> <h3>Update 2 The FormSubmissionToMail() function</h3> <p>Ok, I think I finally get it. The fields and their headings are produced by <code>FormSubmissionToMail()</code>. So that's where you need to add the <code>implode()</code> call, rather than in the <code>ComposeFormToEmail()</code> function as we did earlier:</p> <pre><code>function FormSubmissionToMail() { $ret_str=''; foreach($_POST as $key=&gt;$value) { if(!$this-&gt;IsInternalVariable($key)) { // MOVED THIS BLOCK FROM BELOW... // CHANGES BEGIN HERE..... // This loop looks over all the $_POST values. Need to isolate the `valid_licenses` and do something special with it. if ($key == "valid_license") { $value = implode(", ", $value); // Now $value will output as the comma-separated values list. } // CHANGES END HERE $value = htmlentities($value,ENT_QUOTES,"UTF-8"); $value = nl2br($value); $key = ucfirst($key); $ret_str .= "&lt;div class='label'&gt;$key :&lt;/div&gt;&lt;div class='value'&gt;$value &lt;/div&gt;\n"; } } foreach($this-&gt;fileupload_fields as $upload_field) { $field_name = $upload_field["name"]; if(!$this-&gt;IsFileUploaded($field_name)) { continue; } $filename = basename($_FILES[$field_name]['name']); $ret_str .= "&lt;div class='label'&gt;File upload '$field_name' :&lt;/div&gt;&lt;div class='value'&gt;$filename &lt;/div&gt;\n"; } return $ret_str; } ### Now that this is the correct location, go back and remove the changes we made to `ComposeFormToEmail()` </code></pre>
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    1. COI tried that when I saw it in another post but couldn't get that to work. I get no values when making that change.
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    2. CO@Leah do `print_r($_POST)` to see what the values of those checkboxes look like to PHP in their array.
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    3. COtried '/*Collects clean data from the $_POST array and keeps in internal variables.*/ function CollectData() { $this->name = $this->Sanitize($_POST['name']); $this->email = $this->Sanitize($_POST['email']); $this->construction_experience = $this->Sanitize($_POST['construction_experience']); foreach ($_POST['valid_license'] as $license) { // Append each sanitized element onto valid_license[] $this->valid_license[] = $this->Sanitize($license); }' but it won't return anything now. I made the [] change in the name as well???
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