How to make a loop to get the characteristics of a woocomerce product?

Question

WordPress

There is a plugin for creating xml for unloading goods to the outlet, I decided to modify it a bit. But ran into a problem.
The plugin generates duplicate Feature Names when compiling a feed.


And it is necessary that it would be like this for fast attributes.


Here is the code that is responsible for getting the Characteristic and its parameters:

foreach ( $general_atts as $general_att ) {
            $general_att_array = $general_att->get_data();
            //var_dump($general_att_array);
            if ( true === $general_att_array['variation'] ) {
              continue;
            }
            if ( 1 === $general_att_array['is_taxonomy'] ) {
            $tax_att = get_taxonomy( $general_att_array['name'] );
              if ( ! empty( $tax_att ) ) {
                foreach ( $general_att_array['options'] as $general_att_value ) {
                  $products .= "\n\t\t\t<param name=\"". $tax_att->labels->singular_name ."\">";
                  $att_term = get_term($general_att_value);
                  $products .="\n\t\t\t" . $att_term->name . "</param>";
                }
              }
            } else {
              $products .= "\n\t\t\t<param name=\"". $general_att_array['name'] ."\"><![CDATA[" . str_replace( ' | ', '<br> ', $general_att_array['value'] ) . "]]></param>";
            }
          }
          
        }

Help to make sure that the names of the characteristics are not duplicated, and all parameters are written separated by commas, for example.

Answer 1

this piece

foreach ( $general_att_array['options'] as $general_att_value ) {
                  $products .= "\n\t\t\t<param name=\"". $tax_att->labels->singular_name ."\">";
                  $att_term = get_term($general_att_value);
                  $products .="\n\t\t\t" . $att_term->name . "</param>";
                }

change to

$attr = [];
  foreach ( $general_att_array[ 'options' ] as $general_att_value ) {
    $att_term = get_term( $general_att_value );
    $attr[]   = $att_term->name;
  }
  $products .= "\n\t\t\t" . sprintf('<param name="%s">%s</param>',$tax_att->labels->singular_name,implode( ',', $attr ));