Backend Development 2 min read

Using PHP chunk_split() to Split Strings into Fixed‑Size Chunks

This article explains PHP's chunk_split() function, detailing its purpose of dividing a string into fixed-size pieces, describing its parameters (body, chunklen, end), return value, and providing a practical example that formats base64‑encoded data according to RFC 2045.

Laravel Tech Community
Laravel Tech Community
Laravel Tech Community
Using PHP chunk_split() to Split Strings into Fixed‑Size Chunks

Daily PHP knowledge sharing introduces the chunk_split() function, which splits a string into smaller chunks.

The function is useful for formatting the output of base64_encode() to comply with RFC 2045, inserting a specified end string after every $chunklen characters.

Parameters

body : the string to be split.

chunklen : the size of each chunk (default 76).

end : the line‑ending sequence to append after each chunk (default "\r\n").

Return value

The function returns the split string.

Example

backendPHPBase64string-manipulationchunk_splitrfc2045
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