Collator::getSortKey collator_get_sort_key Get sorting key for a string &reftitle.description; Object oriented style string Collator::getSortKey stringstr Procedural style string collator_get_sort_key Collatorcoll stringstr Return collation key for a string. &reftitle.parameters; coll Collator object. str The string to produce the key from. &reftitle.returnvalues; Returns the collation key for the string. Collation keys can be compared directly instead of strings. &return.falseproblem; &reftitle.examples; ]]> &example.outputs; 71%3F%3FE%01%09%01%8F%08%00 &reftitle.seealso; collator_sort collator_sort_with_sort_keys