chunk_split Split a string into smaller chunks &reftitle.description; stringchunk_split stringbody intchunklen stringend Can be used to split a string into smaller chunks which is useful for e.g. converting base64_encode output to match RFC 2045 semantics. It inserts end every chunklen characters. &reftitle.parameters; body The string to be chunked. chunklen The chunk length. Defaults to 76. end The line ending sequence. Defaults to "\r\n". &reftitle.returnvalues; Returns the chunked string. &reftitle.examples; ]]> &reftitle.seealso; str_split explode split wordwrap RFC 2045