(PHP 4, PHP 5, PHP 7)
chunk_split — Split a string into smaller chunks
chunk_split ( string $string [, int $length = 76 [, string $separator = "\r\n" ]] ) : string
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 separator every length characters.
string
The string to be chunked.
length
The chunk length.
separator
The line ending sequence.
Returns the chunked string.
Example #1 chunk_split() example
<?php // format $data using RFC 2045 semantics $new_string = chunk_split(base64_encode($data)); ?>
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https://www.php.net/manual/en/function.chunk-split.php