Dependency Injection in Slim 4

In contrast with Slim 2 and Slim 3, Slim 4 does not ship with a DI container, but instead, supports any PSR-11 compatibly DI container that you provide. This is part of Slim 4's commitment to interoperability via the PHP-FIG standards. The easiest way to add a container to your Slim application is to call AppFactory::setContainer() before you call AppFactory::create(). The setContainer() method expects any PSR-11 container. Register the container with Slim Let's look at… continue reading.

Posted on 2 October 2019 in PHP, Slim Framework, Slim Framework 4

Running Slim 4 in a subdirectory

If you want to run Slim 4 in a subdirectory of your website, then you have a few things you need to do. Let's consider the situation: Your main website is in the directory /var/www/html and is accessed at https://example.com/. You want your new Slim 4 app to be in the directory /var/www/html/myapp and to be accessed at https://example.com/myapp. Your Slim 4 index.php file is stored in /var/www/html/myapp. There are two things you need to… continue reading.

Posted on 26 September 2019 in PHP, Slim Framework, Slim Framework 4

Slim4-empty: minimal Slim 4 starting point

To simplify creating a new Slim 4 project, I've created slim4-empty which does this for me. To use it: $ composer create-project akrabat/slim4-empty my-new-project and you're done! The my-new-project directory is created and contains Slim 4 along with a minimally viable public/index.php to get you going. You can then run it with the PHP built-in server: php -S 0.0.0.0:8888 -t public/ And navigate to https://localhost:8888 to view "Hello World" in your browser. What does it… continue reading.

Posted on 11 September 2019 in PHP, Slim Framework, Slim Framework 4

Receiving input into a Slim 4 application

A Slim 4 (and Slim 3) application receives data from three places: Any query parameters on the URL (the key-value pairs after the ?) The HTTP message's body (usually for POST and PUT) messages Parameters in the URL (such as the 3 in https://example.com/users/3 Within the application, these are available within the PSR-7 Request object. Let's start with a simple Slim 4 application. Firstly we require the Slim framework and a PSR-7 implementation: $ composer… continue reading.

Posted on 4 September 2019 in PHP, Slim Framework, Slim Framework 4

Automatically mounting a network drive on Mac

I have so many photos that I can't store them all on my hard drive and keep them on my NAS. While on my home network, it would be convenient to automatically mount the NAS folder onto my Mac as I keep forgetting before I open Lightroom. Usually I would use automount to do this, but Lightroom cannot see automounted folders, so I decided to use a combination of AppleScript and Keyboard Maestro. Mount a… continue reading.

Posted on 28 August 2019 in Computing, Keyboard Maestro

A first look at Slim 4

With Slim 4 we have continued the tradition of allowing you to use the framework in the way that best fits you and your project. You can create a Slim application entirely in a single file suitable for prototyping through to a few files for a simple web hook or serverless action all the way to fully-decoupled application suitable for the enterprise. From my point of view, the big changes with Slim 4 are: Support… continue reading.

Posted on 21 August 2019 in Slim Framework, Slim Framework 4

Displaying exif information in WordPress posts

After discovering that WordPress modifies img tags when rendering a page, it crossed my mind that I could display exif information underneath each image on my new photography blog. The basic process is applicable to any manipulation of the content that you would want to do before it is displayed. To do this, we add a new filter to the the_content hook: add_filter('the_content', function ($content) { // manipulate $content return $content; }); As with all… continue reading.

Posted on 14 August 2019 in PHP, WordPress

Images and WordPress

My new WordPress project has multiple photographs per post and as I wanted them to work in an efficient manner for multiple screen resolutions. The secret to this is the srcset and sizes attributes on the img tag. It turns out that WordPress will create multiple sized thumbnails when you upload an image. It will also add the srcset and sizes attributes into your img tags for you if your image tag has a class… continue reading.

Posted on 7 August 2019 in MarsEdit, PHP, WordPress

Developing WordPress sites with Docker

I recently set up a new WordPress based website and local Docker-based development environment. This post documents what I did, so that I can do it again next time! As I'm not in the WordPress world, many things are strange to me and I'm indebted to Jenny Wong for pointing me in the right direction on numerous occasions and being very patient with my questions! Thanks Jenny! Project organisation There's always ancillary files and directories… continue reading.

Posted on 1 August 2019 in PHP, WordPress

Setting title and caption with exiftool

I recently needed to change the title and caption of some photos, so I turned to exiftool as it's the Swiss Army knife of image metadata.

It's a lovely tool with many options, so I wrote a script to make it easy and while I was there, used read to prompt me for the info to set. This is the script:

Posted on 29 July 2019 in Photography

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