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(   // 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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