Imagick::setImageMatteColorImagick::setImageOpacity
(PECL imagick 2.0.0)
Imagick::setImageOpacity — Sets the image opacity level
说明
bool Imagick::setImageOpacity
( float
$opacity
)Sets the image to the specified opacity level. 此方法在Imagick基于ImageMagick 6.3.1以上版本编译时可用。
参数
-
opacity -
The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.
返回值
成功时返回 TRUE。
范例
Example #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;
?>
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