Sets the image opacity level

# Imagick::setImageOpacity

(PECL imagick 2.0.0)

Imagick::setImageOpacity — Sets the image opacity level

### Descrierea

Imagick::setImageOpacity ( float `$opacity` ) : bool

Sets the image to the specified opacity level. Această metodă este disponibilă dacă Imagick a fost compilat cu ImageMagick de versiunea 6.3.1 sau ulterior. 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()

### Parametri

`opacity`

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

### Valorile întoarse

Întoarce `TRUE` în caz de succes.

### Exemple

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;
?>`