   #PHP Manual String functions chr convert_cyr_string

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                                  chunk_split

   (PHP 3>= 3.0.6, PHP 4 )
   chunk_split -- Split a string into smaller chunks

Description

   string chunk_split ( string body [, int chunklen [, string end]])

   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 (defaults to "\r\n") every chunklen characters (defaults
   to 76). It returns the new string leaving the original string
   untouched.

   Example 1. chunk_split() example
   <?php
   // format $data using RFC 2045 semantics
   $new_string = chunk_split(base64_encode($data));
   ?>

   See also explode(), split(), wordwrap() and RFC 2045.
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