PHP 7.2.0 Release Candidate 4 Released

Imagick::setSamplingFactors

(PECL imagick 2.0.0)

Imagick::setSamplingFactorsSets the image sampling factors

说明

bool Imagick::setSamplingFactors ( array $factors )

Sets the image sampling factors.

参数

factors

返回值

成功时返回 TRUE

范例

Example #1 Imagick::setSamplingFactors()

<?php
function setSamplingFactors($imagePath) {

    
$imagePath "../imagick/images/FineDetail.png";
    
$imagick = new \Imagick(realpath($imagePath));
    
$imagick->setImageFormat('jpg');
    
$imagick->setSamplingFactors(array('2x2''1x1''1x1'));

    
$compressed $imagick->getImageBlob();

    
    
$reopen = new \Imagick();
    
$reopen->readImageBlob($compressed);

    
$reopen->resizeImage(
        
$reopen->getImageWidth() * 4,
        
$reopen->getImageHeight() * 4,
        \
Imagick::FILTER_POINT,
        
1
    
);
    
    
header("Content-Type: image/jpg");
    echo 
$reopen->getImageBlob();
}

?>

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