PHP | ImagickDraw setStrokeAlpha() Function Last Updated : 11 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The ImagickDraw::setStrokeAlpha() function is an inbuilt function in PHP which is used to specify the opacity of stroked object outlines. Syntax: bool ImagickDraw::setStrokeAlpha( $opacity ) Parameters: This function accepts a single parameter opacity which is used to specify the transparency of stroke object. It is the float value and lies between 0 and 1. Return Value: This function does not returns any value. Below programs illustrates the ImagickDraw::setStrokeAlpha() function in PHP: Program 1: php <?php // require_once('path/vendor/autoload.php'); // Create an Imagick Draw object $draw = new \ImagickDraw(); // Set the stroke color $strokeColor = new \ImagickPixel('Green'); // Set the fill color $fillColor = new \ImagickPixel('Red'); // Set the stroke color $draw->setStrokeColor('Green'); // Set the Fill Color $draw->setFillColor('Red'); // Set the stroke width $draw->setStrokeWidth(5); // Set the stroke opacity $draw->setStrokeOpacity(0.5); $smoothPointsSet = [ [ ['x' => 10.0 * 5, 'y' => 10.0 * 5], ['x' => 30.0 * 5, 'y' => 90.0 * 5], ['x' => 25.0 * 5, 'y' => 10.0 * 5], ['x' => 50.0 * 5, 'y' => 50.0 * 5], ] ]; foreach ($smoothPointsSet as $points) { $draw->bezier($points); } // Create an imagick object $imagick = new \Imagick(); // Set the image dimensions $imagick->newImage(300, 300, 'White'); // Set the image format $imagick->setImageFormat("png"); // Draw the image $imagick->drawImage($draw); header("Content-Type: image/png"); // Display the image echo $imagick->getImageBlob(); ?> Output: Program 2: php <?php // require_once('path/vendor/autoload.php'); // Create an ImagickDraw object $draw = new \ImagickDraw(); // Set the Stroke Color $draw->setStrokeColor('Green'); // Set the Fill Color $draw->setFillColor('Red'); // Set the stroke width $draw->setStrokeWidth(7); // Set the stroke opacity $draw->setStrokeOpacity(0.5); // Draw the rectangle $draw->rectangle(40, 30, 200, 260); // Create an Imagick object $image = new \Imagick(); // Set the image dimensions $image->newImage(250, 300, 'White'); // Set the image format $image->setImageFormat("png"); // Draw the image $image->drawImage($draw); header("Content-Type: image/png"); // Display the image echo $image->getImageBlob(); ?> Output: Reference: https://www.php.net/manual/en/imagickdraw.setstrokealpha.php Comment More infoAdvertise with us Next Article PHP | ImagickDraw setStrokeColor() Function S sarthak_ishu11 Follow Improve Article Tags : Technical Scripter Web Technologies PHP Image-Processing PHP-function PHP-Imagick +2 More Similar Reads PHP | ImagickDraw setStrokeOpacity() Function The ImagickDraw::setStrokeOpacity() function is an inbuilt function in PHP which is used to specify the opacity of stroked object outlines. The value of opacity lies between 0 to 1. Syntax: bool ImagickDraw::setStrokeOpacity( $stroke_opacity ) Parameters: This function accepts a single parameter $st 2 min read PHP | ImagickDraw setStrokeOpacity() Function The ImagickDraw::setStrokeOpacity() function is an inbuilt function in PHP which is used to specify the opacity of stroked object outlines. The value of opacity lies between 0 to 1. Syntax: bool ImagickDraw::setStrokeOpacity( $stroke_opacity ) Parameters: This function accepts a single parameter $st 2 min read PHP | ImagickDraw setStrokeColor() Function The ImagickDraw::setStrokeColor() function is an inbuilt function in PHP which is used to set the color used for stroking object outlines. Syntax: bool ImagickDraw::setStrokeColor( $stroke_pixel ) Parameters: This function accepts a single parameter $stroke_pixel which is used to hold the color valu 2 min read PHP | ImagickDraw setStrokeColor() Function The ImagickDraw::setStrokeColor() function is an inbuilt function in PHP which is used to set the color used for stroking object outlines. Syntax: bool ImagickDraw::setStrokeColor( $stroke_pixel ) Parameters: This function accepts a single parameter $stroke_pixel which is used to hold the color valu 2 min read PHP | ImagickDraw setStrokeWidth() Function The ImagickDraw::setStrokeWidth() function is an inbuilt function in PHP which is used to set the width of the stroke used to draw object outlines. Syntax: bool ImagickDraw::setStrokeWidth( $stroke_width ) Parameters: This function accepts a single parameter $stroke_width which is used to hold the v 2 min read PHP | ImagickDraw setStrokeWidth() Function The ImagickDraw::setStrokeWidth() function is an inbuilt function in PHP which is used to set the width of the stroke used to draw object outlines. Syntax: bool ImagickDraw::setStrokeWidth( $stroke_width ) Parameters: This function accepts a single parameter $stroke_width which is used to hold the v 2 min read Like