(PECL imagick 2.0.0)
Imagick::newPseudoImage — Creates a new image
$columns
   , int $rows
   , string $pseudoString
   )Creates a new image using ImageMagick pseudo-formats.
columnscolumns in the new image
rowsrows in the new image
pseudoStringstring containing pseudo image definition.
   Returns TRUE on success.
  
Throws ImagickException on error.
Example #1 Imagick::newPseudoImage()
<?php
function newPseudoImage($canvasType) {
    $imagick = new \Imagick();
    $imagick->newPseudoImage(300, 300, $canvasType);
    $imagick->setImageFormat("png");
    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}
//newPseudoImage('gradient:red-rgba(64, 255, 255, 0.5)');
//newPseudoImage("radial-gradient:red-blue");
newPseudoImage("plasma:fractal");
?>