Imagick::setImageOpacity

    (PECL imagick 2, PECL imagick 3)

    Imagick::setImageOpacity — Sets the image opacity level

    Avviso

    This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.

    Descrizione

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

    Sets the image to the specified opacity level. Questo metodo è disponibile se Imagick è stato compilato con ImageMagick versione 6.3.1 o successive. 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()

    Elenco dei parametri

    opacity

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

    Valori restituiti

    Restituisce true in caso di successo.

    Esempi

    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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    User Contributed Notes 1 note

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    hola at rafaeltovar dot info
    5 years 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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