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PHP | Imagick setImageOpacity() Function

The Imagick::setImageOpacity() function is an inbuilt function in PHP which is used to set the opacity level of an Imagick object. This method is available in ImageMagick 6.3.1 or newer versions.

Syntax:

bool Imagick::setImageOpacity( $opct )

Parameters: This function accepts single parameter $opct which specifies the opacity of Imagick object to be set.

Return Value: This function returns True on success.

Below programs illustrate the Imagick::setImageOpacity() function in PHP:



Program 1:
Original Image:
https://tutorialspoint.dev/image/geeks-21.png

<?php
  
// Create new Imagick object
$im = new Imagick(
  
// Using setImageOpacity function
$im->setImageOpacity(0.3);
  
// Display result
header("Content-Type: image/jpg");
echo $im->getImageBlob();
  
?>

/div>

Output:
https://tutorialspoint.dev/image/set_opacity_gfg_imagick.png

Program 2:
Original Image:
https://tutorialspoint.dev/image/Screenshot-from-2018-10-16-23-23-54.png

<?php 
  
$string = "Computer Science portal for Geeks!"
  
// Creating new image of above String 
// and add color
$im = new Imagick(); 
$draw = new ImagickDraw(); 
  
// Fill the color in image 
$draw->setFillColor(new ImagickPixel('green')); 
  
// Set the text font size 
$draw->setFontSize(50); 
  
$metrix = $im->queryFontMetrics($draw, $string); 
$draw->annotation(0, 40, $string); 
$im->newImage($metrix['textWidth'], $metrix['textHeight'], 
        new ImagickPixel('white')); 
// Draw the image         
$im->drawImage($draw); 
$im->setImageFormat('jpeg'); 
  
// Using setImageOpacity function
$im->setImageOpacity(0.9);
  
header("Content-Type: image/jpg");
echo $im->getImageBlob();
?>

Output:
https://tutorialspoint.dev/image/Screenshot-from-2018-10-16-23-23-54.png

Reference: http://php.net/manual/en/imagick.setimageopacity.php



This article is attributed to GeeksforGeeks.org

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