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Package slir
Short Description SLIR (Smart Lencioni Image Resizer) resizes images, intelligently sharpens, crops based on width:height ratios, color fills transparent GIFs and PNGs, and caches variations for optimal performance.
License MIT
Homepage https://github.com/rezozero/SLIR
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Informations about the package slir
SLIR (Smart Lencioni Image Resizer)
Deprecation notice
SLIR is now deprecated in favor of ambroisemaupate/intervention-request library which is based on the strong image-intervention PHP framework. You should consider migrating to this new library which keeps the same Url guidelines.
SLIR (Smart Lencioni Image Resizer) resizes images, intelligently sharpens, crops based on width:height ratios, color fills transparent GIFs and PNGs, and caches variations for optimal performance.
For questions or support, please use the issue tracker.
Requirements
- Composer
- PHP 5.3.6+
- GD Graphics Library -- must be a version that supports
imageconvolution(), such as the bundled version
Setting up, standalone
- Download and unpack to a directory in your web root. I recommend putting SLIR in
/slir/for ease of use. For example, if your website ishttp://yourdomain.com, then SLIR would be athttp://yourdomain.com/slir/. - Run
composer installto generate autoloader and dependencies. - Create your own
SLIRConfig.phpclass usingslirconfig-sample.class.phpfile. If you want to use a namespaced configuration class, you must defineSLIR_CONFIG_CLASSNAMEglobal constant with its Full-qualified classname. For example :define('SLIR_CONFIG_CLASSNAME','\MyCompany\Utils\SLIRConfig');, then SLIR will look for this class to use static configuration. - After you have SLIR configured, visit
http://yourdomain.com/slir/install/in your favorite web browser.
Setting up as a library in a symfony-like environment
-
Add SLIR to your project
composer.jsonas a packagist repository. - Run
composer updateto perform vendor changes. Composer will download SLIR to yourvendor/folder and create a PSR-4 autoloader. -
Create your
SLIRConfigclass -
Create a route handling SLIR
- Create your assets controller
Using
To use SLIR, place an <img\> tag with the src attribute pointing to the path of SLIR (typically "/slir/") followed by the parameters, followed by the path to the source image to resize (e.g. <img src="/slir/w100/path/to/image.jpg"/>). All parameters follow the pattern of a one-letter code and then the parameter value:
| Parameter | Mearning | Example |
|---|---|---|
| w | Maximum width | /slir/w100/path/to/image.jpg |
| h | Maximum height | /slir/h100/path/to/image.jpg |
| c | Crop ratio | /slir/c1x1/path/to/image.jpg |
| q | Quality | /slir/q60/path/to/image.jpg |
| b | Background fill color | /slir/bf00/path/to/image.png |
| p | Progressive | /slir/p1/path/to/image.jpg |
| g | Grayscale | /slir/g1/path/to/image.jpg |
Separate multiple parameters with a hyphen: /slir/w100-h100-c1x1/path/to/image.jpg
Examples
Resizing an image to a max width of 100 pixels and a max height of 100 pixels
<img src="/slir/w100-h100/path/to/image.jpg"/>Resizing and cropping an image into a square
<img src="/slir/w100-h100-c1x1/path/to/image.jpg"/>Resizing and cropping an image to exact dimensions
To do this, you simply need to make the crop ratio match up with the desired width and height. For example, if you want your image to be exactly 150 pixels wide by 100 pixels high, you could do this:
<img src="/slir/w150-h100-c150x100/path/to/image.jpg"/>Or, more concisely:
<img src="/slir/w150-h100-c15x10/path/to/image.jpg"/>However, SLIR will not enlarge images. So, if your source image is smaller than the desired size you will need to use CSS to make it the correct size.
Resizing a JPEG without interlacing (for use in Flash)
<img src="/slir/w100-p0/path/to/image.jpg"/>Matting a PNG with #990000
<img src="/slir/b900/path/to/image.png"/>Without mod_rewrite (not recommended)
<img src="/slir/?w=100&h=100&c=1x1&i=/path/to/image.jpg"/>Changing SLIR request URL
<img src="/assets/w150-h100-c15x10/path/to/image.jpg"/>You can change SLIR request URL to handle it with your own rewrite engine. Just define SLIRConfig::$urlToSLIR to your relative folder: here /assets.
Special characters (e.g. +) in image filenames
Filenames that include special characters must be URL-encoded (e.g. plus sign, +, should be encoded as %2B) in order for SLIR to recognize them properly. This can be accomplished by passing your filenames through PHP's rawurlencode() function.
<img src="/slir/w100/path/to/image%2Bfile.jpg"/>Supporting SLIR
If you would like to support SLIR or to show your appreciation for the time spent developing this project, please make a financial contribution.
For more documentation, open core/SLIR.php in your favorite text editor.
