Php/docs/imagick.setcompressionquality

• PHP Manual
• Imagick
• Sets the object's default compression quality

Imagick::setCompressionQuality

(PECL imagick 2, PECL imagick 3)

Imagick::setCompressionQuality — Sets the object's default compression quality

说明

public Imagick::setCompressionQuality ( int $quality ) : bool

Sets the object's default compression quality.

Caution This method only works for new images e.g. those created through Imagick::newPseudoImage. For existing images you should use Imagick::setImageCompressionQuality().

参数

quality

An int between 1 and 100, 1 = high compression, 100 low compression.

返回值

成功时返回 true。

范例

Example #1 Imagick::setCompressionQuality()

<?phpfunction setCompressionQuality($imagePath, $quality) {    $backgroundImagick = new \Imagick(realpath($imagePath));    $imagick = new \Imagick();    $imagick->setCompressionQuality($quality);    $imagick->newPseudoImage(        $backgroundImagick->getImageWidth(),        $backgroundImagick->getImageHeight(),        'canvas:white'    );    $imagick->compositeImage(        $backgroundImagick,        \Imagick::COMPOSITE_ATOP,        0,        0    );        $imagick->setFormat("jpg");        header("Content-Type: image/jpg");    echo $imagick->getImageBlob();}?>