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davejamesmiller /
Last active Dec 4, 2019
Bash General-Purpose Yes/No Prompt Function ("ask")
# This is a general-purpose function to ask Yes/No questions in Bash, either
# with or without a default answer. It keeps repeating the question until it
# gets a valid answer.
ask() {
local prompt default reply
if [ "${2:-}" = "Y" ]; then
davejamesmiller /
Last active Nov 28, 2019
Laravel's Dependency Injection Container in Depth

Laravel's Dependency Injection Container in Depth

Translations: Korean (by Yongwoo Lee)

Laravel has a powerful Inversion of Control (IoC) / Dependency Injection (DI) Container. Unfortunately the official documentation doesn't cover all of the available functionality, so I decided to experiment with it and document it for myself. The following is based on Laravel 5.4.26 - other versions may vary.

Introduction to Dependency Injection

I won't attempt to explain the principles behind DI / IoC here - if you're not familiar with them you might want to read What is Dependency Injection? by Fabien Potencier (creator of the Symfony framework).

davejamesmiller / paste-as-plain-text.ahk
Last active Nov 26, 2019
Paste clipboard contents as plain text with AutoHotKey
View paste-as-plain-text.ahk
; This is part of my AutoHotkey [1] script that pastes the contents of the
; clipboard as plain text when I press Ctrl+Alt+Shift+V.
; [1]:
; Ctrl+Alt+Shift+V
Clip0 = %ClipBoardAll%
ClipBoard = %ClipBoard% ; Convert to plain text
davejamesmiller / monitor-off.ahk
Last active Nov 22, 2019
Turn monitor off with a keyboard shortcut with AutoHotKey
View monitor-off.ahk
; This is part of my AutoHotkey [1] script that turns off my monitor when I
; press Win+\.
; It also turns the screensaver on at the same time, so that Windows Live
; Messenger (and any other programs) know I am away.
; I don't have a password on my screensaver, so there is a second version
; (Win+Shift+\) that locks the PC as well.
; Note: Sometimes the monitor comes back on after a second and I have to
davejamesmiller / http-redirect-target.php
Last active Nov 20, 2019
Get HTTP redirect destination for a URL in PHP
View http-redirect-target.php
// This makes a single request and reads the "Location" header to determine the
// destination. It doesn't check if that location is valid or not.
function get_redirect_target($url)
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
davejamesmiller / .htaccess
Last active Nov 19, 2019
Resize an image on the fly with PHP and cache it (like Drupal's ImageCache)
View .htaccess
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([a-z]+)/([^/]*)$ resize.php?size=$1&file=$2
davejamesmiller / wp-config.php
Last active Nov 10, 2019
Set WordPress site URL in the config file instead of the database
View wp-config.php
// WordPress stores the site URL in the database by default (which I have never
// understood), and it's a pain to have to type out the UPDATE SQL or search in
// phpMyAdmin to change it. This is a simple way to put the URL into
// wp-config.php instead.
// Note that you will still need to update any URLs that appear in the content,
// especially when you copy a database from a development site to production:
davejamesmiller / run-program.ahk
Last active Nov 7, 2019
Run a program with a keyboard shortcut with AutoHotKey
View run-program.ahk
; This is a simple and pretty generic example of an AutoHotkey script to run a
; program when you press a keyboard shortcut. Add as many of these as you want
; to a .ahk file, and set that to be run at startup.
; See the Hotkeys reference [1] for details of the modifiers and keys available.
; [1]:
; Win+Alt+G - Open Gmail in Chrome
davejamesmiller /
Last active Nov 6, 2019
HTML to PDF conversion in PHP using wkhtmltopdf (and optionally Smarty)

Recently I was asked to generate PDF invoices for an online shop. I looked at various PHP PDF generators, but wasn't particularly impressed with any of them.

Then I found (via Stack Overflow) a command-line HTML-to-PDF convertor called wkhtmltopdf, which uses WebKit (the same layout engine as Safari and Google Chrome) and therefore is very accurate.

There is a class for PHP integration on the Wiki, but I found it overly complicated and it uses temp files which aren't necessary. This is the code I wrote instead.

I used Smarty for generating the HTML for the PDF, but you can use any template engine, or pure PHP if you prefer.

Note: I originally tried to install wkhtmltopdf from source, but it's much easier to use the static binary instead.

davejamesmiller / blogs-menu.php
Last active Nov 4, 2019
List of all blogs in a WordPress Multisite network
View blogs-menu.php
// This code was used to generate a menu showing all blogs on a WordPress
// Multisite installation.
// projects_menu() was used in the template to show a dropdown menu on all the
// sites.
// The shortcode [bloglist] was used in the homepage of the main blog to link to
// all the other blogs.
You can’t perform that action at this time.