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Package imagemanipulation
Short Description Library for image manipulation in PHP with GD
License MIT
Homepage https://github.com/elgervb/imagemanipulation
Informations about the package imagemanipulation
IMAGEMANIPULATION
Fork me on GitHub: https://github.com/elgervb/imagemanipulation

Library to manipulate images using PHP's GD library. Most of the functionality is available through the ImageBuilder facade.
This way chaining of image filters and thumbnailing is possible, like:
Installation
With composer.json:
Requirements
PHP version >= 5.3 with GD library
FUNCTIONALITY
Filters
Lots of image filters. All of them listed below:
- brightness
- colorize
- comic
- contrast
- convolution 3x3 filters
- darken
- dodge
- duotone
- edge detect
- emboss
- find edges
- flip (horizonal, vertical, both)
- gamma correction
- gaussian blur
- grayscale
- hue rotate
- mean remove
- motion blur
- negative
- noise
- old cardboard
- opacity
- pixelate
- random blocks with custom size and color
- replace color
- reverse
- rounded corners
- scatter
- selective blur
- semi grayscale
- sepia
- sepia fast
- sharpen
- smooth
- sobel edge detect
- sobel edge enhance (based on convolution matrix)
- true color
- vignette
Overlay
Use an image as overlay on another image. Can be configured with overlay opacity, start and end position and fill options.
Reflection
Use the current image to make a reflection below the original image
Image repeater
Repeat images on a canvas, until it fits. This way we can create Warhol like images.
Rotate
Rotate images in degrees. When rotating an image not equal to 90, 180, 270 or 360 degrees, then optionally you can specify a background color for those oncovered edges.
Thumbnails
Create thumbnails on the fly. There are several strategies to use:
- Centered strategy: create a thumb from the center of an image. Ideal for creating square thumbs from not so square images
- Max strategy: resize the image to a max width or height keeping proportions. For example: when resizing an image (300x750) on max 500 pixels, the resulting image will be 200x500 pixels
- Percentage strategy: reduce the size of an image with a certain percentage.
Watermarking
Add a watermark to your image. Possible positions are: top, bottom, left, right, center, top right, top left, bottom right, bottom left.
Examples
Thumbnails
You can create thumbnails in several ways
centered
create a thumbnail which is centered in the middle of the image
| Parameter | Default | Description |
|---|---|---|
| width | 250 | The new width of the image in pixels |
| height | 250 | The new height of the image in pixels |
Examples
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max
resize the image to a max width or height keeping proportions, thus restraining the image to a certain size
| Parameter | Default | Description |
|---|---|---|
| width | 250 | The max width of the image in pixels |
| height | 250 | The max height of the image in pixels |
Examples
![]()
percentage
reduce a image with a certain percentage
| Parameter | Default | Description |
|---|---|---|
| percentage | 250 | The percentage to reduce the image with |
Examples
![]()
square
| Parameter | Default | Description |
|---|---|---|
| width | 250 | The new width of the image in pixels |
| height | 250 | The new height of the image in pixels |
Examples
![]()
Available Filters
blocks
Add random blocks to an image with custom size and color
| Parameter | Default | Description |
|---|---|---|
| number | 100 | The number of blocks |
| size | 25 | The size of the blocks in pixels |
| color | ffffff | The color of the blocks |
Examples
brightness
Adjust the brightness of the image, either lighter or darker
| Parameter | Default | Description |
|---|---|---|
| rate | 20 | The brightness level from -255 to 255, from darker to lighter |
Examples

colorize
Blends a fill color with the image
| Parameter | Default | Description |
|---|---|---|
| color | ffffff | The color to blend, either in hexadecimal or rgb(a) |
| opacity | null | The color opacity from 0 to 127 |
Examples
/dog.jpg)
comic
Apply a sketchy comic filter to an image
| Parameter | Default | Description |
|---|---|---|
| opacity | 40 | The opacity from 0 to 127 |
Examples

contrast
Changes the contrast of the image
| Parameter | Default | Description |
|---|---|---|
| rate | 5 | The opacity from -100 to 100, from minimal contrast to high constrast |
Examples

darken
Adjust the brightness of the image, either darker or lighter
| Parameter | Default | Description |
|---|---|---|
| rate | 20 | The brightness level from -255 to 255, from lighter to darker |
Examples

dodge
Dodge an image, resulting in a darker image
| Parameter | Default | Description |
|---|---|---|
| rate | 75 | The dodge level between 0 and 100 |
Examples

duotone
Duotone filter. Enhances Red, Green or Blue or a combination
| Parameter | Default | Description |
|---|---|---|
| red | 0 | The amount of red to add max = 255 |
| green | 0 | The amount of green to add max = 255 |
| blue | 0 | The amount of blue to add max = 255 |
Examples

edgedetect
Uses edge detection to highlight the edges in the image
Examples

emboss
Embosses the image
Examples

findedges
Find the edges in an image without color loss
Examples

flip
Flips an image
| Parameter | Default | Description |
|---|---|---|
| mode | both | Direction to fip: vertical, horizontal or both |
Examples

gammacorrection
Applies gamma correction
| Parameter | Default | Description |
|---|---|---|
| input | 1.0 | Input |
| output | 1.537 | Output |
Examples

gaussianblur
Blurs the image using the Gaussian method.
Examples

grayscale
Converts the colors to grayscale
Examples

huerotate
Rotete the hue of the image
| Parameter | Default | Description |
|---|---|---|
| rotate | 90 | degrees to rotate |
Examples

meanremove
Uses mean removal to achieve a "sketchy" effect
Examples

motionblur
Motion blurs the image
Examples

negative
Create a negative of an image
Examples

noise
add noise to the image
| Parameter | Default | Description |
|---|---|---|
| rate | 20 | The amount of noise to apply |
Examples

oldcardboard
Image filter to give the image an old cardboard look
Examples

opacity
Sets the opacity of an image
| Parameter | Default | Description |
|---|---|---|
| opacity | 80 | A value between 0 and 127. 0 indicates completely opaque while 127 indicates completely transparent. |
Examples

pixelate
Pixelate an image
| Parameter | Default | Description |
|---|---|---|
| rate | 20 | the blocksize in pixels |
Examples
![]()
rotate
Rotate an image over an angle
| Parameter | Default | Description |
|---|---|---|
| degrees | 90 | The degrees to rotate the image |
| color | null | The background color to apply |
Examples

scatter
Scatter pixels around in a random way
| Parameter | Default | Description |
|---|---|---|
| rate | 5 | the scatter size in pixels |
Examples

selectiveblur
Image filter Selective Blur
Examples

sepia
Apply sepia to the image
| Parameter | Default | Description |
|---|---|---|
| rate | 15 | the darken rate |
Examples

semigrayscale
Applies grayscale to an image, optionally add a grayscale percentage
| Parameter | Default | Description |
|---|---|---|
| rate | 75 | The grayscale rate |
Examples

sepiafast
Apply sepia to the image (fast)
Examples

sharpen
Sharpens the image
Examples

smooth
Makes the image smoother.
| Parameter | Default | Description |
|---|---|---|
| rate | 5 | the darken rate |
Examples

sobel
Sobel edge detect (extremely slow...)
Examples

sobeledge
Sobel edge enhance
Examples

truecolor
Makes the image smoother.
| Parameter | Default | Description |
|---|---|---|
| primary | ffffff | the primary color |
| secundary | 000000 | the secundary color |
Examples

vignette
Applies a darker mask around the edges of the image
Examples
