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Upgrading PHP

Guidelines for upgrading the minimum PHP version requirements of packages and projects.

This isn't meant to be an exhaustive guide to upgrading, but as a checklist for the most important upgrades.

PHP 5.3

The first version to support namespaces - any relevant PHP packages/projects usually have this version as the minimum requirement, so this document won't concern itself with upgrades prior to that.

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This script tries to detect monkey-patching, polyfills and other hacks/overrides in the browser.

Paste it into the Chrome (or Edge) console and press ENTER.

Note that this may give false positives for window.location, window.fetch and window.length - this appears to be because these properties aren't correctly reflected by the native browser implementations, but if you know how to fix that, please post a comment.

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function findVar(varName) {
  let seen = new Map();

  function search(obj, prefix = "") {
    if (seen.has(obj)) {
      return;
    }

    seen.set(obj, true);

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// Based on: https://stackoverflow.com/a/46814952/283851

/**
 * Create a Base64 Image URL, with rotation applied to compensate for EXIF orientation, if needed.
 * 
 * Optionally resize to a smaller maximum width - to improve performance for larger image thumbnails.
 */
export async function getImageUrl(file: File, maxWidth: number|undefined) {
    return readOrientation(file).then(orientation => applyRotation(file, orientation || 1, maxWidth || 999999));
}

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Draft for a simple PSR providing a trivial abstraction of the local system environment.

Why? So we can stop using hacks to work around dependencies on system state - so that these dependencies can be made visible as (constructor) dependencies, and so we can mock the implementations under test.

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Introduction

⚠️ I am no longer actively maintaining this. ⚠️

With the Windows 10 Creators Update comes an awesome new opportunity to run a lighweight Ubuntu Linux environment as a subsystem of Windows. This is officially known as Windows Subsystem for Linux (WSL) or Bash on Windows.

This is great news for PHP developers using Windows - we can now get access to native Linux builds of PHP, PECL extensions, ImageMagick, NGINX and other server components and tools, without having to migrate to a Linux desktop environment!

In this guide, we'll get you set up with WSL itself, a working PHP 8.2 environment with OpCache, XDebug and task/terminal integration with Php Storm, and working NGINX configuration - as well as various tools, including PEAR/PECL, Composer and Node.JS.

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You can have a linear workflow with the array functions.

The following is unreadable:

$output = array_reduce(
  array_map(
    function($n) { return $n ** 2; }
    array_filter($input, function($n) { return $n % 2 == 0; })
 ),

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<?php

// an ultra-simple middleware host that works for middleware callables with any signature.
// the last argument is always the `$next` function, which delegates to the next middleware.

class Host
{
    /**
     * @var callable[]
     */

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<?php

namespace Psr\Middleware;

use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;

/**
 * This interface defines the formal method common to HTTP Middleware components.
 */

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/**
 * Automatically create ordered/unordered lists when detecting content like "* " or "1. "
 */
define(function () {
    "use strict";

    return function () {

        return function (scribe) {
            /**