Imagick::setImageOpacity

(PECL imagick 2.0.0)

Imagick::setImageOpacity — Sets the image opacity level

说明

bool Imagick::setImageOpacity ( float $opacity )

Warning

本函数暂无文档，仅有参数列表。

Sets the image to the specified opacity level. This method is present if Imagick is compiled against ImageMagick 6.3.1 or later.

参数

opacity: The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.

返回值

Returns TRUE on success.

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;

?>