zlib_encode

    (PHP 5 >= 5.4.0, PHP 7, PHP 8)

    zlib_encode — Compress data with the specified encoding

    Description

    zlib_encode(string $data, int $encoding, int $level = -1): string|false

    Compress data with the specified encoding.

    Warning

    This function is currently not documented; only its argument list is available.

    Parameters

    data

    The data to compress.

    encoding

    The compression algorithm. Either ZLIB_ENCODING_RAW, ZLIB_ENCODING_DEFLATE or ZLIB_ENCODING_GZIP.

    level

    Return Values

    Examples

    Example #1 zlib_encode() example

    <?php
    $str     = 'hello world';
    $enc = zlib_encode($str, ZLIB_ENCODING_DEFLATE);
    echo     bin2hex($enc);
    ?>

    The above example will output:

    789ccb48cdc9c95728cf2fca4901001a0b045d

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    User Contributed Notes 1 note

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    2
    geniuszxy at outlook dot com
    2 years ago
    zlib_encode, gzcompress, gzdeflate and gzencode are the same functions besides the parameter order.

    zlib_encode + ZLIB_ENCODING_RAW = gzdeflate
    zlib_encode + ZLIB_ENCODING_DEFLATE = gzcompress
    zlib_encode + ZLIB_ENCODING_GZIP = gzencode
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