PHP | Imagick getImageChannelDepth() Function

PHP | Gmagick getimagechanneldepth() Function

The Imagick::getImageChannelDepth() function is an inbuilt function in PHP which is used to get the depth for channel image.

Syntax:

int Imagick::getImageChannelDepth( $channel )

Parameters: This function accepts a single parameter $channel which specifies the channel constant that is valid for channel mode. The default value of channel is Imagick::CHANNEL_DEFAULT.

Return Value: This function returns True on success.

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

Program 1:
Original Image:

<?php 
  
// Create new imagick object 
$im = new Imagick( 
'https://media.w3wiki.net/wp-content/uploads/w3wiki-15.png'); 
  
// Using getImageChannelDepth function 
// with different channel 
echo $im->getImageChannelDepth(imagick::CHANNEL_RED) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_GRAY) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_CYAN) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_GREEN) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_BLUE) . "</br>"; 
?> 

Output:

Program 2:
Original Image:

<?php  
  
$string = "Computer Science portal for Beginner!";  
  
// 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 getImageChannelDepth function 
// with different channel 
echo $im->getImageChannelDepth(imagick::CHANNEL_RED) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_GRAY) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_CYAN) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_GREEN) . "</br>"; 
echo $im->getImageChannelDepth(imagick::CHANNEL_BLUE) . "</br>"; 
?> 

Output:

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

Tags:

#Image-Processing #PHP-function #PHP-Imagick #PHP #Web Technologies

PHP | Gmagick getimagechanneldepth() Function

PHP | Imagick getImageChannelDepth() Function

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