SunshinePHP 2016


(PECL imagick 2.0.0)

Imagick::setIteratorIndexSet the iterator position


bool Imagick::setIteratorIndex ( int $index )

Set the iterator to the position in the image list specified with the index parameter. Este método está disponível se o PHP foi compilado com o ImageMagick versão 6.2.9 ou superior.



The position to set the iterator to

Valor Retornado

Retorna TRUE no sucesso.


Exemplo #1 Using Imagick::setIteratorIndex():

Create images, set and get the iterator index

= new Imagick();
$im->newImage(100100, new ImagickPixel("red"));
$im->newImage(100100, new ImagickPixel("green"));
$im->newImage(100100, new ImagickPixel("blue"));


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User Contributed Notes 1 note

wilcobeekhuizen at gmail dot com
4 years ago
This function returns true on success but setting the iterator to an invalid index throws an exception instead of returning false:
Fatal error: Uncaught exception 'ImagickException' with message 'Unable to set iterator index'

This can happen when counting images inside a gif file, because the iterator count starts at zero and not one. If you count the number of images in a gif file be sure to use iterator 0 for the first image, like this:

= new Imagick('simple.gif');
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