Greg PHP Imagix

Save images in real-time in different formats using Intervention Image.

You don't care anymore about generating new images from their sources when your app UI was changed. Only thing you should do is to add new formats or change existent and the application will take care of them by itself.

Table of Contents:

• Requirements
• How It Works
• Methods
• License
• Huuuge Quote

Requirements

• PHP Version ^5.6 || ^7.0

How It Works

First of all, you have to initialize the Imagix.

Optionally you can create an URL decorator for it. It helps to rewrite image URLs to/from HTTP Server(Apache/Nginx).

class ImagixDecorator implements ImageDecoratorStrategy
{
    // Will use /imagix public path for generated images.
    private $uri = '/imagix';
    
    public function output($url)
    {
        return $this->nginxUri . $url;
    }

    public function input($url)
    {
        return \Greg\Support\Str::shift($url, $this->uri);
    }
}

$sourcePath = __DIR__ . '/img';

$destinationPath = __DIR__ . '/imagix';

$decorator = new ImagixDecorator();

$intervention = new Intervention\Image\ImageManager();

$imagix = new \Greg\Imagix\Imagix($intervention, $sourcePath, $destinationPath, $decorator);

Next, create image formats.

$imagix->format('square', function (\Intervention\Image\Image $image) {
    $image->resize(600, 600, function (\Intervention\Image\Constraint $constraint) {
        $constraint->aspectRatio();
        $constraint->upsize();
    });
});

Now, it's time to use it in your app.

It will generate an URL in format <image_path>/<image_name>@<format>@<last_modified>.<image_extension>.

// result: /imagix/pictures/picture@square@129648839.jpg
$imageUrl = $imagix->url('/pictures/picture.jpg', 'square');

echo '<img src="' . $imageUrl . '" width="600" height="600" alt="Picture" />';

To see the results, you have to config your http server.

Nginx

# Imagix
location ~* ^/imagix/.+ {
    # If images doesn't exists, send to PHP to create it.
    if (!-f $document_root$uri) {
        rewrite .+ /imagix.php last;
    }

    expires max;
    add_header Pragma public;
    add_header Cache-Control "public";
    add_header Vary "Accept-Encoding";
}

In imagix.php you will dispatch new files that was not generated yet in /imagix path.

$imagix->send($_SERVER['REQUEST_URI']);

Methods

Magic methods:

• __construct

__construct

Initialize the manager.

__construct(ImageManager $manager, string $sourcePath, string $destinationPath, ImageDecoratorStrategy $decorator = null)

$manager - Intervention image manager;
$sourcePath - Source path;
$destinationPath - Destination path;
$decorator - Decorator.

Example:

class ImagixDecorator implements ImageDecoratorStrategy
{
    // Will use /imagix public path for generated images.
    private $uri = '/imagix';
    
    public function output($url)
    {
        return $this->nginxUri . $url;
    }

    public function input($url)
    {
        return \Greg\Support\Str::shift($url, $this->uri);
    }
}

$sourcePath = __DIR__ . '/img';

$destinationPath = __DIR__ . '/imagix';

$decorator = new ImagixDecorator();

$intervention = new Intervention\Image\ImageManager();

$imagix = new \Greg\Imagix\ImagixManager($intervention, $sourcePath, $destinationPath, $decorator);

Supported methods:

• format - Register an image format;
• url - Get formatted image URL;
• source - Get source URL of a formatted image URL;
• effective - Get effective URL of a formatted image URL;
• compile - Compile a formatted image URL;
• send - Send image of a formatted image URL;
• unlink - Remove formatted versions of an image;
• remove - Remove formatted images.

format

Register an image format.

format(string $name, callable(\Intervention\Image\Image $image): void $callable): $this

$name - Format name;
$callable - A callable to format an image.
    $image - The image.

Example:

$imagix->format('square', function (\Intervention\Image\Image $image) {
    $image->resize(600, 600, function (\Intervention\Image\Constraint $constraint) {
        $constraint->aspectRatio();
        $constraint->upsize();
    });
});

url

Get formatted image URL.

url(string $source, string $format): string

$source - Original image URL;
$format - Format name.

Example:

$imagix->url('/pictures/picture.jpg', 'square'); // result: /pictures/picture@square@129648839.jpg

source

Get source URL of a formatted image URL.

source(string $destination): string

$destination - Formatted image URL.

Example:

$imagix->source('/pictures/picture@square@129648839.jpg'); // result: /pictures/picture.jpg

effective

Get effective URL of a formatted image URL.

Every time a image changes, it's effective URL also changes. So, if you have an old URL, you will get the new one.

This is useful when you store somewhere formatted urls.

By default, send method will return a 301 redirect to the new URL.

effective(string $destination): string

$destination - Formatted image URL.

Example:

$imagix->effective('/pictures/picture@square@129642346.jpg'); // result: /pictures/picture@square@129648839.jpg

compile

Compile a formatted image URL. Will return the real path of the image.

compile(string $destination): string

$destination - Formatted image URL.

Example:

$imagix->compile('/pictures/picture@square@129648839.jpg'); // result: /path/to/pictures/picture@square@129648839.jpg

send

Send image of a formatted image URL.

send(string $destination): $this

$destination - Formatted image URL.

Example:

$imagix->send('/pictures/picture@square@129648839.jpg');

unlink

Remove formatted versions of an image.

unlink(string $source, string $format = null, int $lifetime = 0): $this

$source - Formatted image URL;
$format - Format name;
$lifetime - If set, will remove only expired files.

Example:

$imagix->unlink('/pictures/picture.jpg');

remove

Remove formatted images.

remove(string $format = null, int $lifetime = 0): $this

$format - Format name;
$lifetime - If set, will remove only expired files.

Example:

$imagix->remove(); // Will remove all formatted images.

$imagix->remove('square'); // Will remove only square images.

License

MIT © Grigorii Duca

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