(PECL lzf >= 0.1.0)
lzf_compress — LZF compression
lzf_compress ( string $data ) : string
 lzf_compress() compresses the given data string using LZF encoding. 
data
The string to compress.
 Returns the compressed data or false if an error occurred. 
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    https://www.php.net/manual/en/function.lzf-compress.php