PHPWales 2020 - June 3rd to June 4th

Imagick::setImageOpacity

(PECL imagick 2.0.0)

Imagick::setImageOpacitySets the image opacity level

Descrição

Imagick::setImageOpacity ( float $opacity ) : bool

Sets the image to the specified opacity level. Este método está disponível se o PHP foi compilado com o ImageMagick versão 6.3.1 ou superior. 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()

Parâmetros

opacity

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

Valor Retornado

Retorna TRUE no sucesso.

Exemplos

Exemplo #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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User Contributed Notes 1 note

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hola at rafaeltovar dot info
1 month ago
This function is deprecated from last stable version (3.4.4 - 2019-05-02) of PECL Imagick extension.

More info: http://pecl.php.net/package-changelog.php?package=imagick&release=3.4.4

"setImageAlpha" is the new alternative function, but doesn't work with ImageMagick < 7.

More info: https://github.com/avalanche123/Imagine/issues/715
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