str_from          123 ext/standard/php_string.h PHPAPI char *php_strtr(char *str, int len, char *str_from, char *str_to, int trlen);
str_from         2780 ext/standard/string.c PHPAPI char *php_strtr(char *str, int len, char *str_from, char *str_to, int trlen)
str_from         2792 ext/standard/string.c 		xlat[(unsigned char) str_from[i]] = str_to[i];