split

split("string", "sep") uses the character sequence in "sep" as a field separator to split the content of "string" into individual fields. It returns an array of strings, each corresponding to one field of the original string. The second parameter "sep" is optional. If "sep" is omitted or if it contains a single space character the fields are split by any amount of whitespace (space, tab, formfeed, newline, return). Otherwise the full sequence of characters in "sep" must be matched. For examples, see counting_words.