PHP | Imagick setImageCompression() Function
The Imagick::setImageCompression() function is an inbuilt function in PHP which is used to set the image compression type.
Syntax:
bool Imagick::setImageCompression( int $compression )
Parameters: This function accepts a single parameter $compression which holds an integer matching to one of Imagick::COMPRESSION_* constants. Additionally, you can pass the constant directly like $imagick->setImageCompression(imagick::COMPRESSION_DXT1);. List of Compression constants are given below:
- imagick::COMPRESSION_UNDEFINED (0)
- imagick::COMPRESSION_NO (1)
- imagick::COMPRESSION_BZIP (2)
- imagick::COMPRESSION_FAX (6)
- imagick::COMPRESSION_GROUP4 (7)
- imagick::COMPRESSION_JPEG (8)
- imagick::COMPRESSION_JPEG2000 (9)
- imagick::COMPRESSION_LOSSLESSJPEG (10)
- imagick::COMPRESSION_LZW (11)
- imagick::COMPRESSION_RLE (12)
- imagick::COMPRESSION_ZIP (13)
- imagick::COMPRESSION_DXT1 (3)
- imagick::COMPRESSION_DXT3 (4)
- imagick::COMPRESSION_DXT5 (5)
Return Value: This function returns TRUE on success.
Exceptions: This function throws ImagickException on error.
Below programs illustrate the Imagick::setImageCompression() function in PHP:
Program 1:
php
<?php
$imagick = new Imagick(
$imagick ->setImageCompression(imagick::COMPRESSION_RLE);
$compression = $imagick ->getImageCompression();
echo $compression ;
?>
|
Output:
12
Program 2:
php
<?php
$imagick = new Imagick(
$imagick ->setImageCompression(imagick::COMPRESSION_JPEG);
$imagick ->setImageCompressionQuality(5);
$imagick ->setformat( 'jpg' );
header("Content-Type: image/jpg");
echo $imagick ->getImageBlob();
?>
|
Output:
Reference: https://www.php.net/manual/en/imagick.setimagecompression.php
Last Updated :
10 Jun, 2022
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