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<?php var_dump(INTL_ICU_VERSION); $s1 = 'Hello'; $coll = collator_create('en_US'); $res = collator_get_sort_key($coll, $s1); echo bin2hex($res);
Output for git.master, git.master_jit, rfc.property-hooks
string(4) "57.1" 37313f3f45010901dc08

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