(PECL imagick 2.0.0)
Imagick::setImageOpacity — Sets the image opacity level
$opacity
) : boolSets the image to the specified opacity level. Этот метод доступен, если Imagick был скомпилирован с версией ImageMagick 6.3.1 или старше. This method operates on all channels, which means that for example opacity value of 0.5 will set all transparent areas to partially opaque. To add transparency to areas that are not already transparent use Imagick::evaluateImage()
opacity
The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.
В случае успешной работы возвращает TRUE
.
Пример #1 A Imagick::setImageOpacity() example
An example of using Imagick::setImageOpacity()
<?php
/* Create the object */
$image = new Imagick('source.png');
/* Set the opacity */
$image->setImageOpacity(0.7);
/* output the image */
header('Content-type: image/png');
echo $image;
?>