Controls whether stroked outlines are antialiased. Stroked outlines are antialiased by default. When antialiasing is disabled stroked pixels are thresholded to determine if the stroke color or underlying canvas color should be used.
Background color
 
Stroke color
 
Fill color
 
Controls whether stroked outlines are antialiased. Stroked outlines are antialiased by default. When antialiasing is disabled stroked pixels are thresholded to determine if the stroke color or underlying canvas color should be used.
Parameters
stroke_antialiasboolthe antialias setting
function setStrokeAntialias($strokeColor, $fillColor, $backgroundColor)
{

    $draw = new \ImagickDraw();

    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(1);
    $draw->setStrokeAntialias(false);
    $draw->line(100, 100, 400, 105);

    $draw->line(100, 140, 400, 185);

    $draw->setStrokeAntialias(true);
    $draw->line(100, 110, 400, 115);
    $draw->line(100, 150, 400, 195);

    $image = new \Imagick();
    $image->newImage(500, 250, $backgroundColor);
    $image->setImageFormat("png");

    $image->drawImage($draw);

    header("Content-Type: image/png");
    echo $image->getImageBlob();
}