PHP | Imagick setImageMatte() Function

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The Imagick::setImageMatte() function is an inbuilt function in PHP which is used to set the matte channel of an Imagick object.

Syntax:

bool Imagick::setImageMatte( $matte )

Parameters: This function accepts single parameter $matte. If the parameter set to True then it activate the matte channel and if the parameter set to False then it disable the matte channel.

Return Value: This function returns True on success.

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

Original Image:

Program 1:

<?php 
  
// Create new Imagick object 
$imagick = new Imagick( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-15.png'); 
  
// Using getImageMatte function 
$res = $imagick->getImageMatte(); 
  
// Display result 
echo "Matte Before: " . $res . "</br>"; 
  
// Set Image matte true. 
// If it set to false then matte will  
// disable and return nothing when  
// using getimagematte function 
$imagick->setImageMatte(true); 
  
// Using getImageMatte function 
$res = $imagick->getImageMatte(); 
  
// Display result 
echo "Matte After: " . $res . "</br>"; 
?> 

Output:

Matte Before: 1
Matte After: 1

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);  
  
$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 getImageMatte function 
$res = $im->getImageMatte(); 
  
// Display result 
echo "Matte Before: " . $res . "</br>"; 
  
// Set Image matte true/false or (0/1) 
// if set false then matte will disable  
// and return nothing when  
// using getimagematte function 
$im->setImageMatte(false); 
  
// Using getImageMatte function 
$res = $im->getImageMatte(); 
  
// Display result 
echo "Matte After: " . $res . "</br>"; 
?> 

Output:

Matte Before: 1
Matte After:

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

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