Basic usage

Imagick makes image manipulation in PHP extremely easy through an OO interface. Here is a quick example on how to make a thumbnail:

Example #1 Creating a thumbnail in Imagick

<?php

header
('Content-type: image/jpeg');

$image = new Imagick('image.jpg');

// If 0 is provided as a width or height parameter,
// aspect ratio is maintained
$image->thumbnailImage(1000);

echo 
$image;

?>

Using SPL and other OO features supported in Imagick, it can be simple to resize all files in a directory (useful for batch resizing large digital camera images to be web viewable). Here we use resize, as we might want to retain certain meta-data:

Example #2 Make a thumbnail of all JPG files in a directory

<?php

$images 
= new Imagick(glob('images/*.JPG'));

foreach(
$images as $image) {

    
// Providing 0 forces thumbnailImage to maintain aspect ratio
    
$image->thumbnailImage(1024,0);

}

$images->writeImages();

?>

This is an example of creating a reflection of an image. The reflection is created by flipping the image and overlaying a gradient on it. Then both, the original image and the reflection is overlayed on a canvas.

Example #3 Creating a reflection of an image

<?php
/* Read the image */
$im = new Imagick("test.png");

/* Thumbnail the image */
$im->thumbnailImage(200null);

/* Create a border for the image */
$im->borderImage(new ImagickPixel("white"), 55);

/* Clone the image and flip it */
$reflection $im->clone();
$reflection->flipImage();

/* Create gradient. It will be overlayed on the reflection */
$gradient = new Imagick();

/* Gradient needs to be large enough for the image and the borders */
$gradient->newPseudoImage($reflection->getImageWidth() + 10$reflection->getImageHeight() + 10"gradient:transparent-black");

/* Composite the gradient on the reflection */
$reflection->compositeImage($gradientimagick::COMPOSITE_OVER00);

/* Add some opacity. Requires ImageMagick 6.2.9 or later */
$reflection->setImageOpacity0.3 );

/* Create an empty canvas */
$canvas = new Imagick();

/* Canvas needs to be large enough to hold the both images */
$width $im->getImageWidth() + 40;
$height = ($im->getImageHeight() * 2) + 30;
$canvas->newImage($width$height, new ImagickPixel("black"));
$canvas->setImageFormat("png");

/* Composite the original image and the reflection on the canvas */
$canvas->compositeImage($imimagick::COMPOSITE_OVER2010);
$canvas->compositeImage($reflectionimagick::COMPOSITE_OVER20$im->getImageHeight() + 10);

/* Output the image*/
header("Content-Type: image/png");
echo 
$canvas;
?>

The above example will output something similar to:

Output of example : Creating a reflection of an image

This example illustrates how to use fill patterns during drawing.

Example #4 Filling text with gradient

<?php

/* Create a new imagick object */
$im = new Imagick();

/* Create new image. This will be used as fill pattern */
$im->newPseudoImage(5050"gradient:red-black");

/* Create imagickdraw object */
$draw = new ImagickDraw();

/* Start a new pattern called "gradient" */
$draw->pushPattern('gradient'005050);

/* Composite the gradient on the pattern */
$draw->composite(Imagick::COMPOSITE_OVER005050$im);

/* Close the pattern */
$draw->popPattern();

/* Use the pattern called "gradient" as the fill */
$draw->setFillPatternURL('#gradient');

/* Set font size to 52 */
$draw->setFontSize(52);

/* Annotate some text */
$draw->annotation(2050"Hello World!");

/* Create a new canvas object and a white image */
$canvas = new Imagick();
$canvas->newImage(35070"white");

/* Draw the ImagickDraw on to the canvas */
$canvas->drawImage($draw);

/* 1px black border around the image */
$canvas->borderImage('black'11);

/* Set the format to PNG */
$canvas->setImageFormat('png');

/* Output the image */
header("Content-Type: image/png");
echo 
$canvas;
?>

The above example will output something similar to:

Output of example : Filling text with gradient

Working with animated GIF images

Example #5 Read in GIF image and resize all frames

<?php

/* Create a new imagick object and read in GIF */
$im = new Imagick("example.gif");

/* Resize all frames */
foreach ($im as $frame) {
    
/* 50x50 frames */
    
$frame->thumbnailImage(5050);

    
/* Set the virtual canvas to correct size */
    
$frame->setImagePage(505000);
}

/* Notice writeImages instead of writeImage */
$im->writeImages("example_small.gif"true);
?>

Working with ellipse primitive and custom fonts

Example #6 Create a PHP logo

<?php
/* Set width and height in proportion of genuine PHP logo */
$width 400;
$height 210;

/* Create an Imagick object with transparent canvas */
$img = new Imagick();
$img->newImage($width$height, new ImagickPixel('transparent'));

/* New ImagickDraw instance for ellipse draw */
$draw = new ImagickDraw();
/* Set purple fill color for ellipse */
$draw->setFillColor('#777bb4');
/* Set ellipse dimensions */
$draw->ellipse($width 2$height 2$width 2$height 20360);
/* Draw ellipse onto the canvas */
$img->drawImage($draw);

/* Reset fill color from purple to black for text (note: we are reusing ImagickDraw object) */
$draw->setFillColor('black');
/* Set stroke border to white color */
$draw->setStrokeColor('white');
/* Set stroke border thickness */
$draw->setStrokeWidth(2);
/* Set font kerning (negative value means that letters are closer to each other) */
$draw->setTextKerning(-8);
/* Set font and font size used in PHP logo */
$draw->setFont('Handel Gothic.ttf');
$draw->setFontSize(150);
/* Center text horizontally and vertically */
$draw->setGravity(Imagick::GRAVITY_CENTER);

/* Add center "php" with Y offset of -10 to canvas (inside ellipse) */
$img->annotateImage($draw0, -100'php');
$img->setImageFormat('png');

/* Set appropriate header for PNG and output the image */
header('Content-Type: image/png');
echo 
$img;
?>

The above example will output something similar to:

Output of example : Creating PHP logo with Imagick

add a note add a note

User Contributed Notes 2 notes

up
5
inoshadi at gmail dot com
10 months ago
on Example #3 Creating a reflection of an image
----------------------------------------------------
/* Clone the image and flip it */
$reflection = $im->clone();
$reflection->flipImage();
----------------------------------------------------
it was using the Imagick::clone function

This function has been DEPRECATED as of imagick 3.1.0 in favour of using the clone keyword.

use below code instead:
----------------------------------------------------
/* Clone the image and flip it */
$reflection = clone $im;
$reflection->flipImage();
----------------------------------------------------

http://php.net/manual/en/imagick.clone.php
up
1
vokseli
2 months ago
Be careful when loading multiple images by passing an array to a new Imagick object. This is from Example #2:

<?php

$images
= new Imagick(glob('images/*.JPG'));

?>

If you have lots of images inside the images folder, PHP will consume a lot of memory, ergo it is not recommended. I personally think it's a better idea to loop each image separately:

<?php

$image_files
= glob('images/*.JPG');

foreach (
$image_files as $image_file) {
   
$image = new Imagick($image_file);
   
// Do something for the image and so on...
}

?>

This way only a single image is fitted into the memory at a time.
To Top