Description

A simple PHP class to generate the HTML <picture> element with different source types supported. It could be used for optimization of image rendering depending on the browser supporting one or another image format.

Installation

The preferred way to install this extension is through composer.

Place composer.phar file in the same directory with composer.json file and run

$ php composer.phar require almeyda/html-picture-element "*"

or add

{
    ...
    "require": {
        ...
        "almeyda/html-picture-element": "dev-master"
        ...
    }
    ...
}

to the "require" section of your composer.json file and run

$ php composer.phar update

Usage

\almeyda\htmlpicture\src\HtmlPicture::get($src, $attributes, $sourceTypes);

Where:

• src - path to main image
• attributes - "<image"> tag attributes
• sourceTypes - array of the image types to be collected into picture sources

Example of usage:

\almeyda\htmlpicture\src\HtmlPicture::get('path/to/image.png', ['alt' => 'Image alt'], ['webp', 'jp2', 'jpx']),

This produces an output like

<picture>
    <source srcset="path/to/image.webp?v=1527278990" type="image/webp">
    <source srcset="path/to/image.jp2?v=1527278990" type="image/jp2">
    <source srcset="path/to/image.jpx?v=1527278990" type="image/jpx">
    <img src="path/to/image.png?v=1527278990" alt="Image alt">
</picture>

You can define image types to be collected and rendered into picture tag once using a method setSouceTypes

\almeyda\htmlpicture\src\HtmlPicture::setSouceTypes(['webp', 'jp2', 'jpx']);

...

\almeyda\htmlpicture\src\HtmlPicture::get('path/to/image1.png'),

\almeyda\htmlpicture\src\HtmlPicture::get('path/to/image2.png'),