/**
* Returns the list tags appearing in the links with the given tags
- * @param $filteringTags: tags selecting the links to consider
- * @param $visibility: process only all/private/public links
- * @return: a tag=>linksCount array
+ *
+ * @param array $filteringTags tags selecting the links to consider
+ * @param string $visibility process only all/private/public links
+ *
+ * @return array tag => linksCount
*/
public function linksCountPerTag($filteringTags = [], $visibility = 'all')
{
- $links = empty($filteringTags) ? $this->links : $this->filterSearch(['searchtags' => $filteringTags], false, $visibility);
- $tags = array();
- $caseMapping = array();
+ $links = $this->filterSearch(['searchtags' => $filteringTags], false, $visibility);
+ $tags = [];
+ $caseMapping = [];
foreach ($links as $link) {
foreach (preg_split('/\s+/', $link['tags'], 0, PREG_SPLIT_NO_EMPTY) as $tag) {
if (empty($tag)) {
$tags[$caseMapping[strtolower($tag)]]++;
}
}
- // Sort tags by usage (most used tag first)
- arsort($tags);
+
+ /*
+ * Formerly used arsort(), which doesn't define the sort behaviour for equal values.
+ * Also, this function doesn't produce the same result between PHP 5.6 and 7.
+ *
+ * So we now use array_multisort() to sort tags by DESC occurrences,
+ * then ASC alphabetically for equal values.
+ *
+ * @see https://github.com/shaarli/Shaarli/issues/1142
+ */
+ $keys = array_keys($tags);
+ $tmpTags = array_combine($keys, $keys);
+ array_multisort($tags, SORT_DESC, $tmpTags, SORT_ASC, $tags);
return $tags;
}