function ISN_clean in ISBN Field 6

6 calls to ISN_clean()

canonical_ISBN in ./isbn.inc

canonical_ISSN in ./isbn.inc

country_group_code in ./isbn.inc

generate_ISN_corrections in ./isbn.inc

ISN_checksum_OK in ./isbn.inc

... See full list

File

./isbn.inc, line 93

Code

function ISN_clean($isbn_proto) {
  return str_replace("x", "X", str_replace("-", "", $isbn_proto));
}