PHP Australia Conference 2015


(PECL imagick 2.0.0)

Imagick::fxImageEvaluate expression for each pixel in the image


Imagick Imagick::fxImage ( string $expression [, int $channel = Imagick::CHANNEL_ALL ] )

Evaluate expression for each pixel in the image. Consult » The Fx Special Effects Image Operator for more information.

Elenco dei parametri


The expression.


Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

Valori restituiti

Restituisce TRUE in caso di successo.


Lancia una ImagickException in caso di errore.

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User Contributed Notes 1 note

thomasgf22 at NOSPAM dot gmail dot com
4 months ago
Beware that fxImage return value's type is a new object(Imagick), opposing the current documentation (boolean). Therefore it does not affect the caller object. Example:
= new Imagick();
$canvas->newImage(256, 256, "white", "jpg");

$gradient = new Imagick();
$gradient->newPseudoImage(256, 256, "gradient:white-black");
$canvas->compositeImage( $gradient, imagick::COMPOSITE_OVER, 0, 0 );
$canvas->rotateImage(new ImagickPixel(), 90);
/*instead of just $canvas->fxImage("floor(s*10+0.5)/10"); we must store fxImage()'s result*/
$canvas= $canvas->fxImage("floor(s*10+0.5)/10");

header( "Content-Type: image/jpg" );
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