WordPress Dashboard Widget as a Client Support Form

dcwd-support-request.php

<?php
// WordPress Administration Bootstrap
$admin_file = 'wp-admin/admin.php';
$plugin_dir = dirname( __FILE__ ) . '/';

// Find the wp-admin/admin.php file.
$relative_dirs = '';
$num_rel_dirs = 0;
while ( !file_exists( $plugin_dir . $relative_dirs .$admin_file ) && $num_rel_dirs < 10 ) {
    $relative_dirs .= '../';
    $num_rel_dirs++;
}
require_once( $plugin_dir . $relative_dirs .$admin_file );
 

// Send the support email.
//error_log('$_POST:'.var_export($_POST));
if ( array_key_exists( 'support-request-nonce', $_POST ) && wp_verify_nonce( $_POST[ 'support-request-nonce' ], 'support-request-nonce' ) ) {
    if ( array_key_exists( 'support_issue', $_POST ) ) {
        $support_issue = filter_var( $_POST[ 'support_issue' ], FILTER_SANITIZE_STRING );
        
        // Set the From email and name if supplied.
        $headers = array();
        if ( array_key_exists( 'email_from', $_POST ) ) {
            if ( array_key_exists( 'name_from', $_POST ) ) {
                $headers[] = sprintf( "From: %s <%s>", filter_var( $_POST[ 'name_from' ], FILTER_SANITIZE_STRING ), filter_var( $_POST[ 'email_from' ], FILTER_SANITIZE_EMAIL ) );
            }
            else {
                $headers[] = sprintf( "From: %s", filter_var( $_POST[ 'email_from' ], FILTER_SANITIZE_EMAIL ) );
            }
        }

        wp_mail( 'daymobrew@yahoo.com', 'Support Request From: ' . get_bloginfo( 'name' ), $support_issue, $headers );
    }
}

$goback = add_query_arg( 'support-request-submitted', 'true',  wp_get_referer() );
wp_redirect( $goback );
exit; 

support-info-widget.php

<?php
// Add Support info box into WordPress Dashboard
add_action('wp_dashboard_setup', 'dcwd_add_dashboard_widgets' );
function dcwd_add_dashboard_widgets() {
  wp_add_dashboard_widget('wp_dashboard_widget', 'Site Information', 'dcwd_theme_info'); 
}

 
function dcwd_theme_info() {
?>
<ul>
  <li><strong>Developed By:</strong> Damien Carbery</li>
  <li><strong>Website:</strong> <a href='http://damiencarbery.com'>damiencarbery.com</a></li>
  <li><strong>Contact:</strong> <a href='mailto:damien@damiencarbery.com'>damien@damiencarbery.com</a></li>
  <li><strong>Phone:</strong> XXX-XXX-XXXX</li>
  </ul>
<?php
}

support-request-form-widget.php

<?php
// Add Support info box to Dashboard
add_action('wp_dashboard_setup', 'dcwd_add_dashboard_support_widget' );
function dcwd_add_dashboard_support_widget() {
  // Support form is only for authors and higher - exclude subscribers.
  if ( current_user_can( 'edit_posts' ) ) {
      wp_add_dashboard_widget( 'dcwd-support-form', 'Support Request', 'dcwd_support_form' ); 
  }
}


function dcwd_support_form() {
    if ( array_key_exists( 'support-request-submitted', $_GET ) && true == $_GET[ 'support-request-submitted' ] ) {
        $now = date( get_option( 'time_format' ) );
        echo '<div class="updated inline"><p><strong>Support Request Submitted at '.$now.'</strong></p></div>';
    }
    
    $current_user = wp_get_current_user();
    
    // Exclude the user first and last name only if set.
    $name_from = '';
    if ( strlen( $current_user->user_firstname ) && strlen( $current_user->user_lastname ) ) {
        $name_from = $current_user->user_firstname . ' ' . $current_user->user_lastname;
    }
?>
<form method="post" action="<?php echo plugin_dir_url( __FILE__ ); ?>dcwd-support-request.php">
<p>If you are having problems with your site or need some changes made, please describe them below.</p>
<p>A support request will be opened and Damien will respond.</p>
<textarea name="support_issue" rows="10" cols="50" id="support_issue" class="large-text code"></textarea>
<p class="submit"><input type="submit" name="submit" id="submit" class="button button-primary" value="Submit Support Request" /></p>
<input type="hidden" name="support-request-nonce" value="<?php echo wp_create_nonce('support-request-nonce'); ?>" />
<input type="hidden" name="email_from" value="<?php echo $current_user->user_email; ?>" />
<?php if ( strlen( $name_from ) ) { ?>
<input type="hidden" name="name_from" value="<?php echo $current_user->user_firstname, ' ', $current_user->user_lastname; ?>" />
<?php } ?>
</form>
<?php
}