German Special character not working in WordPress Schema - wordpress

Question

I am using the following filter to add some more Schema related information to my product.
But for some German character , it is converted to Numeric code
add_filter( 'woocommerce_structured_data_product', 'filter__woocommerce_structured_data_product', 20, 2 );
function filter__woocommerce_structured_data_product( $schema, $product ) {
global $post;
$shipping_val = utf8_decode( get_post_meta( $post->ID, 'pro_shipping', true ) );
// Not working : CHF 10.–
$colour_val = utf8_decode( get_post_meta( $post->ID, 'pro_color', true ) );
// Not working : Aussen: rosa und blau (metallisch), Bordüre: grün, Innen: lila
$schema['shipping'] = array(
'#type' => 'Shipping',
'name' => $shipping_val ,
);
$schema['colour'] = array(
'#type' => 'Colour',
'name' => $colour_val ,
);
return $schema;
}
I have added comment , in that form actual data are stored in custom fields.
and I have added screen-shot , which convert actual data in numeric form
How do I solve this ?

Answer 1

Not sure why you've run utf8_decode function on those values, but you could use iconv function to convert them back to utf8.
So when you run utf8_decode it will convert your values to ISO-8859-1 characters.
utf8_decode: Converts a string with ISO-8859-1 characters encoded with UTF-8 to single-byte ISO-8859-1
We could use ISO-8859-1 in iconv function.
iconvDocs
For example, if you run the following code:
$german_word = "Bordüre: grün";
$utf8__decode_german_word = utf8_decode($german_word);
$utf8_german_word_main = iconv("ISO-8859-1", "utf-8//TRANSLIT//IGNORE", $utf8__decode_german_word);
echo $german_word . "<br>";
echo $utf8__decode_german_word . "<br>";
echo $utf8_german_word_main . "<br>";
Which will output this:
// $german_word result
Bordüre: grün
// $utf8__decode_german_word result
Bord�re: gr�n
// $utf8_german_word_main result
Bordüre: grün
So your entire code would be something like this:
add_filter("woocommerce_structured_data_product", "filter__woocommerce_structured_data_product", 20, 2);
function filter__woocommerce_structured_data_product($schema, $product)
{
global $post;
$shipping_val = utf8_decode(get_post_meta($post->ID, "pro_shipping", true));
$colour_val = utf8_decode(get_post_meta($post->ID, "pro_color", true));
$schema["shipping"] = array(
"#type" => "Shipping",
"name" => iconv("ISO-8859-1", "utf-8//TRANSLIT//IGNORE", $shipping_val),
);
$schema["colour"] = array(
"#type" => "Colour",
"name" => iconv("ISO-8859-1", "utf-8//TRANSLIT//IGNORE", $colour_val),
);
return $schema;
}
Let me know if you could get it to work.