substr           98146 ext/sqlite3/libsqlite/sqlite3.c     FUNCTION(substr,             2, 0, 0, substrFunc       ),
substr           98147 ext/sqlite3/libsqlite/sqlite3.c     FUNCTION(substr,             3, 0, 0, substrFunc       ),
substr           2761 ext/standard/basic_functions.c 	PHP_FE(substr,															arginfo_substr)
substr             53 ext/standard/php_string.h PHP_FUNCTION(substr);
substr           2370 ext/standard/string.c PHP_FUNCTION(substr)