Imagick::getImageCompression

(PECL imagick 3 >= 3.3.0)

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

Descrizione

public Imagick::getImageCompression(): int

Gets the current image's compression type.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns the compression constant

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User Contributed Notes 3 notes

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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.

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-1

undoable at gmail dot com ¶

11 years ago

This function is undefined. You must use getImageCompressionQuality() instead.

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-1

alitrix at gmail dot com ¶

7 years ago

This function is added in version 3.3.0 and above

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