PHP | Imagick setImageOpacity() Function

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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:

Original Image:

Program 1:

<?php 
  
// Create new Imagick object 
$im = new Imagick( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-15.png'); 
  
// Using setImageOpacity function 
$im->setImageOpacity(0.3); 
  
// Display result 
header("Content-Type: image/jpg"); 
echo $im->getImageBlob(); 
  
?> 

Output:

Original Image:

Program 2:

<?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);  
  
$matrix = $im->queryFontMetrics($draw, $string);  
$draw->annotation(0, 40, $string);  
$im->newImage($matrix['textWidth'], $matrix['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(); 
?> 