SammyK

<?php
// Similar, but not quite the same as LeetCode problem #226
// @see https://leetcode.com/problems/invert-binary-tree/description/

function invertTree(array $nodes): array
{
    $height = (int) floor(log(count($nodes), 2));
    $level = 1;
    while ($level <= $height) {
        $start = 2 ** $level - 1;

SammyK

Find Bugs Related To Uniform Variable Syntax

When upgrading to PHP 7, you might run into really hard-to-debug error messages which might be a result of the uniform variable syntax RFC.

This script (forked from Nikita Popov's gist) will scan a PHP 5 codebase and call out the file and line number of an indirect expression with an offset. The evaluation of these expressions has changed in PHP 7.

Installation

To run this script against a PHP 5 codebase, make sure you have PHP and Composer installed. Then create a directory somewhere and install nikic/php-parser with Composer.

SammyK

<?php

class Color
{
	private $hex;
	private $r;
	private $g;
	private $b;
	
	public function __construct(string $hex) {

SammyK

Northeast PHP Hack-a-thon (php-src) 2017

• Set up GitHub account + add your SSH keys
• Fork php-src repo to your GitHub account
• Clone source (or use USB stick) & cd into directory
• Update origin remote URL with your fork

$ git remote set-url origin {your-fork-URL}

SammyK

FROM ubuntu:16.04

MAINTAINER Sammy Kaye Powers

RUN apt-get update \
	&& apt-get install sudo vim git -y \
	&& apt-get install build-essential autoconf valgrind -y \
	&& apt-get install re2c bison -y \
	&& apt-get install libxml2-dev locales lcov -y

SammyK

This works and takes args!

SammyK

Proposed retry keyword in PHP

This is a pivot of the original syntax proposal thanks to feedback from twitter.

The retry keyword adds to the try\catch\finally block to optionally execute an arbitrary statement before jumping to the top of the try block n times.

TL;DR The retry keyword offers a cleaner, more readable & more efficient solution to a common problem.

A simple example

SammyK

Without retry keyword

try {
	$attempts = 0;
	retry:
	throw new Exception('Oops!');
} catch (Exception $e) {
	if ($attempts < 4) {
		$attempts++;

SammyK

<?php namespace App\LaravelExtensions;

use Illuminate\Queue\QueueServiceProvider;

class MyQueueServiceProvider extends QueueServiceProvider {

    /**
     * Register the connectors on the queue manager.
     *
     * @param  \Illuminate\Queue\QueueManager  $manager

SammyK

--TEST--
Checks for return types on error
--SKIPIF--
<?php
  if (!extension_loaded('json')) die('skip: json extension not available');
?>
--FILE--
<?php
var_dump(json_last_error('foo'));
?>