README

About Imager

Imager is a Laravel package simplifying image processing operations using PHP's native GD library extension.

Install

Use composer to install the package

composer require dnsimmons/imager

Add the service provider to your config/app.php along with an alias:

'providers' => [
	...
    Dnsimmons\Imager\ImagerServiceProvider::class,
];

'aliases' => [
	...
    'Imager' => Dnsimmons\Imager\Imager::class,	
];

Usage

Basic Usage

The basic example provided below takes an input file example.jpg and resizes it to 640 x 480 pixels and then converts it to greyscale before outputting the raw image data to the browser.

Basic Example

$imager = new \Imager('path/to/example.jpg');
$imager->resize(640,480)->greyscale()->render();

Most of the examples provided in this documentation uses a call to render() which will output the image as raw data back to the caller. In the event you wish to write images to disk simply use write() and specify the path and filename for the output.

Render Example

$imager = new \Imager('path/to/example.jpg');
$imager->resize(640,480)->greyscale()->render();

Write Example

$imager = new \Imager('path/to/example.jpg');
$imager->resize(640,480)->greyscale()->write('path/to/output.jpg');

Using Scripts

Imager also supports scripted processing using JSON. Let's repeat what we did above but instead deliver it as a script.

Scripted Example

$imager = new \Imager('path/to/example.jpg');
$imager->script('path/to/script.json')->render();

Here is our example commands script (script.json). Parameters are supplied in the same order as required by the actual methods for a given command.

[
	{"command":"resize", "params":["640","480"]},
	{"command":"greyscale", "params":[]}
]

Commands (A-Z)

anaglyph( )

Applys a stereo 3D anaglyph effect to an image.

$imager->anaglyph()->render();

blackwhite( )

Converts an images color to black and white.

$imager->blackwhite()->render();

blur( integer $level )

Blurs an image with a given level from 0 to 10.

$imager->blur(1)->render();

brightness( integer $level )

Adjust the brightness of an image with a given level from -100 to 100.

$imager->brightness(50)->render();

colorize( integer $r, integer $g, integer $b )

Apply a color mask to an image with given RGB values from -255 to 255.

$imager->colorize(128,0,255)->render();

convert( string $format )

Convert an image to a specified image format (JPEG, PNG, or GIF).

$imager->convert('JPEG')->render();

contrast( integer $level )

Adjust the contrast of an image with a given level from -100 to 100.

$imager->contrast(50)->render();

crop( integer $x, integer $y, integer $width, integer $height )

Crops an image with specified width and height in pixels from a given x and y origin point.

$imager->crop(0,0,320,240)->render();

desaturate( integer $level )

Adjust the saturation of an image with a given level of 0 to 100.

$imager->desaturate(50)->render();

emboss( )

Apply a emboss filter to an image.

$imager->emboss()->render();

fisheye( )

Applys a fisheye lens effect to an image.

$imager->fisheye()->render();

flip( string $direction )

Flips an image either horizontally (h), vertically (v), or both directions (b).

$imager->flip('b')->render();

greyscale( )

Converts an images color to greyscale.

$imager->greyscale()->render();

layer( string $image_path, integer $opacity )

Layers an image with a given opacity (from 0 to 100) on top of an image using identical dimensions.

$imager->layer('path/to/layer.png', 50)->render();

negative( )

Apply a negative filter to an image.

$imager->negative()->render();

noise( integer $level )

Adds noise to an image with a given noise level from 0 to ?.

$imager->noise(20)->render();

pixelate( integer $size )

Apply a pixelation filter to an image with a given pixel size.

$imager->pixelate(4)->render();

replace( integer $r, integer $g, integer $b, integer $r2, integer $g2, integer $b2 )

Apply a color replacement to an image with given RGB values from -255 to 255.

$imager->replace(255,0,0,0,0,255)->render();

resize( integer $width, integer $height )

Resizes an image to specified width and height in pixels.

$imager->resize(640,480)->render();

rotate( integer $degrees )

Rotates an image by a given number of degrees.

$imager->rotate(90)->render();

scale( integer $width, integer $height )

Scales an image to specified width and height in pixels based on largest dimension keeping aspect ratio.

$imager->scale(640,480)->render();

sepia( )

Apply a sepia filter to an image.

$imager->sepia()->render();

sharpen( integer $level )

Sharpens an image with a given level from 0 to 10.

$imager->sharpen(1)->render();

sketch( )

Apply a sketch filter to an image.

$imager->sketch()->render();

smooth( integer $level )

Smooths an image with a given level from 0 to 100.

$imager->smooth(10)->render();

vignette( integer $size )

Applys a vignette effect to an image with a given size of 0 to 10.

$imager->vignette(0.4)->render();

watermark( string $image_path, string $position )

Applys an image in a given position on top of an image. Possible positions include center, top-left, top-right, bottom-left, and bottom-right.

$imager->watermark('path/to/watermark.png', 'bottom-right')->render();