PHP | GmagickDraw setfillopacity() Function

<?php

// require_once('vendor/autoload.php');
 
// Create GmagickDraw object
$draw = new \GmagickDraw ();

// Set the stroke color
$draw->setStrokeColor('Green');
 
// Use setFillColor() Function
$draw->setFillColor('Red');
 
// Use setFillOpacity() Function 
$draw->setFillOpacity(0.2);
 
$draw->setStrokeWidth(7);
 
// Create rectangle
$draw->rectangle(40, 30, 200, 260);
 
// Use setFillColor() Function
$draw->setFillColor('Red');

// Create rectangle of given size
$draw->rectangle(260, 30, 400, 260);
 
// Create an Gmagick object
$image = new \Gmagick ();
    
$image->newImage(500, 300, 'white');

// Set the image format
$image->setImageFormat("png");
 
// Render the draw commands in the 
// GmagickDraw object into the image.
$image->drawImage($draw);
 
// Send the image to the browser
header("Content-Type: image/png");
echo $image->getImageBlob();
 
?>

<?php

// require_once('path/vendor/autoload.php');
 
// Create new GmagickDraw object
$draw = new \GmagickDraw ();
 
// Set the stroke color
$strokeColor = new \GmagickPixel('Green');

// Set the filled color
$fillColor = new \GmagickPixel('Red');

// Set the stroke color
$draw->setStrokeColor('Green');

// Set the filled color
$draw->setFillColor('Red');
     
// Use setFillOpacity() Function
$draw->setFillOpacity(0.5);

// Set the stroke width
$draw->setStrokeWidth(2);
 
$smoothPointsSet = [ [
          ['x' => 10.0 * 5, 'y' => 10.0 * 5],
          ['x' => 30.0 * 5, 'y' => 90.0 * 5],
          ['x' => 25.0 * 5, 'y' => 10.0 * 5],
          ['x' => 50.0 * 5, 'y' => 50.0 * 5], ] ];
 
foreach ($smoothPointsSet as $points) {
    $draw->bezier($points);
}

// Create an image object
$gmagick = new \Gmagick ();

$gmagick->newImage(300, 300, 'White');

// Set the image format
$gmagick->setImageFormat("png");
 
// Render the draw commands in the
// GmagickDraw object into the image.
$gmagick->drawImage($draw);
 
// Send the image to the browser
header("Content-Type: image/png");
echo $gmagick->getImageBlob();
?>