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chunk_split()

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<?php
$string 
chunk_split (
    
// string $body
    
// [int $chunklen = 76]
    
  // [string $end = "\r\n"]
);
?>
Result
$string = '00000
11111
22222
33333
'
Examples
#1 chunk_split  ("00000111112222233333",
 
5,
 
"\n")
See also
explode, str_split, wordwrap