pcre_study        296 ext/pcre/pcrelib/pcre.h PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
pcre_study       2253 ext/pcre/pcrelib/pcregrep.c   hints_list[j] = pcre_study(pattern_list[j], 0, &error);
pcre_study        344 ext/pcre/php_pcre.c 		extra = pcre_study(re, soptions, &error);