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Informations about the package image

Image

PHPixie Image library

Author Source Code Software License

There are multiple libraries for image manipulation in PHP, unfortunately their API is not always intuitive. PHPixie Image provides a common simple interface to working with GD, Imagick and Gmagick making development easy and allowing effortless switching between them.

Initializing

Add "phpixie/image":"~3.0" to your composer.json and run composer update.

PHPixie framework users have the Image component already present and can be accessed via:

The default drivers can be specified in the configuration file:

Creating and reading images

Now that you have the library initialized, you can create a new image or read one from disk:

The above examples will all use the default driver you specified when initializing the library. If you find yourself working with multiple backends at once you can specify the driver to use for each image:

We'll take a look at image manipulation in a second, but first let's see how we can write the images back to disk or render them into a variable.

Image manipulation

Resizing and Cropping

If you would like to have user avatars of a fixed size, you would have to resize them to be as close to the needed size as possible and then crop them, like this:

Rotating and flipping

Overlaying Images Overlaying is most useful for watermarking images or creating some fancy avatars. You can overlay any number of images by chaining overlay() calls:

Note that overlaying an image will not auto expand the existing one, meaning that if you overlay a 500×300 image over a 100×100 one you will get a 100×100 result with the access cropped out. You can work around this by creating a canvas layer:

Drawing Text

Drawing text is one of the most frustrating things in image manipulation, especially when it comes to wrapping text over multiple lines. Before we look at examples, let's take a look at font metrics.

Font Metrics

When specifying text coordinates we will be specifying the coordinates of the baseline, so the text will appear slightly higher.

That’s it. You should be able to cope with pretty much any image now.


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