grapheme_strstr    29 ext/intl/grapheme/grapheme.h PHP_FUNCTION(grapheme_strstr);
grapheme_strstr   659 ext/intl/grapheme/grapheme_string.c PHP_FUNCTION(grapheme_strstr)
grapheme_strstr   738 ext/intl/php_intl.c 	PHP_FE( grapheme_strstr, grapheme_strstr_args )