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-rw-r--r--ext/pcre/php_pcre.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/ext/pcre/php_pcre.c b/ext/pcre/php_pcre.c
index dcbc98fb85..ccb0a51c0e 100644
--- a/ext/pcre/php_pcre.c
+++ b/ext/pcre/php_pcre.c
@@ -350,7 +350,14 @@ PHPAPI pcre_cache_entry* pcre_get_compiled_regex_cache(char *regex, int regex_le
case 'S': do_study = 1; break;
case 'U': coptions |= PCRE_UNGREEDY; break;
case 'X': coptions |= PCRE_EXTRA; break;
- case 'u': coptions |= PCRE_UTF8; break;
+ case 'u': coptions |= PCRE_UTF8;
+ /* In PCRE, by default, \d, \D, \s, \S, \w, and \W recognize only ASCII
+ characters, even in UTF-8 mode. However, this can be changed by setting
+ the PCRE_UCP option. */
+#ifdef PCRE_UCP
+ coptions |= PCRE_UCP;
+#endif
+ break;
/* Custom preg options */
case 'e': poptions |= PREG_REPLACE_EVAL; break;