grapheme_stristr   30 ext/intl/grapheme/grapheme.h PHP_FUNCTION(grapheme_stristr);
grapheme_stristr  667 ext/intl/grapheme/grapheme_string.c PHP_FUNCTION(grapheme_stristr)
grapheme_stristr  739 ext/intl/php_intl.c 	PHP_FE( grapheme_stristr, grapheme_strstr_args )