Need to return two values in a PHP if - else statement

one text

Solution:

If you want each result on a line, it sounds like you could use a temporary variable, and concatenate to it based on the logic.

 <?php
      $output = '';
      if ($pdf_url != '') {
           if ($title != '') {
                $title_from_url = $this->make_title_from_url($pdf_url);
                if ($title == $title_from_url || $this->make_title_from_url('/'.$title) == $title_from_url) {
                     // This would be the default title anyway based on URL
                     // OR if you take .pdf off title it would match, so that's close enough - don't load up shortcode with title param
                     $title = '';
                } else {
                     $title = ' title="' . esc_attr( $title ) . '"';
                }
           }
           // You may need print_r() around apply_filters() if it returns an array
           $output .= apply_filters('pdfemb_override_send_to_editor', '[pdf-embedder url="' . $pdf_url . '"'.$title.']', $html, $id, $attachment) . "\n";
      } else {
           $output .= $html . "\n";
      }
      return $output;

Or if you want it in array:

 <?php
      $output = [];
      if ($pdf_url != '') {
           if ($title != '') {
                $title_from_url = $this->make_title_from_url($pdf_url);
                if ($title == $title_from_url || $this->make_title_from_url('/'.$title) == $title_from_url) {
                     // This would be the default title anyway based on URL
                     // OR if you take .pdf off title it would match, so that's close enough - don't load up shortcode with title param
                     $title = '';
                } else {
                     $title = ' title="' . esc_attr( $title ) . '"';
                }
           }
           // You may need print_r() around apply_filters() if it returns an array
           $output[] = apply_filters('pdfemb_override_send_to_editor', '[pdf-embedder url="' . $pdf_url . '"'.$title.']', $html, $id, $attachment);
      } else {
           $output[] = $html;
      }
      return $output;