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Example code of firstinternet/wordpress-responsive-image

Informations about the package wordpress-responsive-image

First Internet Responsive Image Class

Overview

The responsive image class was built by a team of developers at First Internet.

The ResponsiveImage class is a PHP utility designed to generate responsive images for WordPress. It supports multiple image sources, lazy loading, WebP format, and dynamic sizing based on Bootstrap-like breakpoints.

Features

Installation

Ensure that your WordPress theme or plugin includes this class and that you have the necessary WordPress functions available.

  1. Copy the ResponsiveImage.php file into your theme or plugin.
  2. Include it in your project:

Usage

Basic Example

This outputs a responsive <picture> element for the image with ID 123, using the medium size.

Customizing Output

Using get() Instead of generate()

If you need to store the image markup in a variable:

Methods

__construct(int $imageId, string $size = 'full')

setSources(array $sources)

Sets different image sources for various breakpoints.

lazyLoad(string $lazyClass = 'lazy')

Enables lazy loading by default with the 'lazy' class.

webp()

Enables WebP format support.

setClass(string $class)

Adds custom classes to the <img> element.

setAlt(string $alt)

Sets the image alt text.

setAttributes(array $attributes)

Adds custom attributes to the <img> element.

setSizes(string $sizes)

Sets the sizes attribute manually.

autoSizes(string $classes)

Automatically calculates image sizes based on Bootstrap grid classes.

generate()

Outputs the <picture> element directly.

get()

Returns the <picture> element as a string.

Example Output

License

This project is licensed under the MIT License - see the LICENSE file for details.

This class provides a flexible way to manage responsive images in WordPress, improving performance and user experience.

For more information, visit First Internet.

All versions of wordpress-responsive-image with dependencies

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Package Version
Requires php Version >=5.3.2
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