The Gmagick::getimagecolors() function is an inbuilt function in PHP which is used to get the number of unique colors in the image.
Syntax:
int Gmagick::getimagecolors( void )
Parameters:This function doesn’t accept any parameter.
Return Value: This function returns an integer value.
Exceptions: This function throws GmagickException on error.
Used Image: To capture the canvas area
Below given programs illustrate the Gmagick::getimagecolors() function in PHP:
Program 1: For an image with multiple colors.
<?php // Create a new Gmagick object $gmagick = new Gmagick( 'geeksforgeeks.png' );
// Get the border color $color = $gmagick ->getimagecolors();
echo $color ;
?> |
Output:
2955
Program 2: For an image with single color.
<?php // Create a new Gmagick object $gmagick = new Gmagick( 'singlecolor.png' );
// Get the border color $color = $gmagick ->getimagecolors();
echo $color ;
?> |
Output:
1
Program 3: For a drawing
<?php // Create a new Gmagick object $gmagick = new Gmagick( 'geeksforgeeks.png' );
// Create a GmagickDraw object $draw = new GmagickDraw();
// Set the color $draw ->setFillColor( 'white' );
// Function to draw rectangle $draw ->rectangle(0, 0, 800, 400);
// Set the fill color $draw ->setFillColor( 'red' );
// Set the font size $draw ->setfontsize(50);
// Annotate a text $draw ->annotate(30, 100, 'GeeksforGeeks' );
// Use of drawimage function $gmagick ->drawImage( $draw );
// Get the image colors $colors = $gmagick ->getimagecolors();
echo $colors ;
?> |
Output:
238
Reference: https://www.php.net/manual/en/gmagick.getimagecolors.php