Supported only full ascii for types and langs in the list of values.

application/src/Api/Representation/AbstractResourceEntityRepresentation.php

@@ -344,26 +344,26 @@ public function value($term, array $options = [])
  if (empty($options['type'])) {
  $types = false;
  } elseif (is_array($options['type'])) {
- $types = array_fill_keys(array_map('mb_strtolower', $options['type']), true);
+ $types = array_fill_keys(array_map('strtolower', $options['type']), true);
  } else {
- $types = [mb_strtolower($options['type']) => true];
+ $types = [strtolower($options['type']) => true];
  }
 
  if (empty($options['lang'])) {
  $langs = false;
  } elseif (is_array($options['lang'])) {
- $langs = array_fill_keys(array_map('mb_strtolower', $options['lang']), true);
+ $langs = array_fill_keys(array_map('strtolower', $options['lang']), true);
  } else {
- $langs = [mb_strtolower($options['lang']) => true];
+ $langs = [strtolower($options['lang']) => true];
  }
 
  // Match only the representations that fit all the criteria.
  $matchingValues = [];
  foreach ($this->values()[$term]['values'] as $value) {
- if ($types && empty($types[mb_strtolower($value->type())])) {
+ if ($types && empty($types[strtolower($value->type())])) {
  continue;
  }
- if ($langs && empty($langs[mb_strtolower($value->lang())])) {
+ if ($langs && empty($langs[strtolower($value->lang())])) {
  continue;
  }
  $matchingValues[] = $value;