Imagick::getImageCompression

    (PECL imagick 3 >= 3.3.0)

    Imagick::getImageCompression — Gets the current image's compression type

    Description

    public Imagick::getImageCompression(): int

    Gets the current image's compression type.

    Parameters

    This function has no parameters.

    Return Values

    Returns the compression constant

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    User Contributed Notes 3 notes

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    1
    Mondragon
    4 years ago
    Example use:

    $im = new Imagick("mypicture.jpg");
    $ctype = $im->getImageCompression();
    if($ctype == Imagick::COMPRESSION_ZIP) echo "PNG file!";
    if($ctype == Imagick::COMPRESSION_JPEG) echo "JPG file!";
    if($ctype == Imagick::COMPRESSION_LZW) echo "GIF file!";

    All options:
    COMPRESSION_UNDEFINED
    COMPRESSION_NO
    COMPRESSION_BZIP
    COMPRESSION_FAX
    COMPRESSION_GROUP4
    COMPRESSION_JPEG
    COMPRESSION_JPEG2000
    COMPRESSION_LOSSLESSJPEG
    COMPRESSION_LZW
    COMPRESSION_RLE
    COMPRESSION_ZIP
    COMPRESSION_DXT1
    COMPRESSION_DXT3
    COMPRESSION_DXT5
    COMPRESSION_ZIPS
    COMPRESSION_PIZ
    COMPRESSION_PXR24
    COMPRESSION_B44
    COMPRESSION_B44A
    COMPRESSION_LZMA
    COMPRESSION_JBIG1
    COMPRESSION_JBIG2

    The numbers for which those constants stand differ by version. So always use the constants.
    up
    0
    alitrix at gmail dot com
    6 years ago
    This function is added in version 3.3.0 and above
    up
    -2
    undoable at gmail dot com
    11 years ago
    This function is undefined. You must use getImageCompressionQuality() instead.
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