Code Explainers

Php code explainers

php 
<?php
 
namespace App\Queue;
 

Deduplicating a job queue with Redis

deduplication redis atomicity
Advanced 8 steps
php 
<?php
 
namespace App\Providers;
 

Defining authorization gates in Laravel

authorization gates service-provider
Intermediate 6 steps
php 
<?php
 
final class TaskProgressReporter
{

Tracking task progress in a JSON file

state-persistence atomic-writes json
Intermediate 9 steps
php 
<?php
 
namespace App\Http\Requests\DataObjects;
 

Typed request DTOs in Laravel

data-transfer-object validation immutability
Intermediate 6 steps
php 
<?php
 
namespace App\Jobs;
 

Rendering invoice PDFs in a Laravel queue job

queued jobs pdf generation file storage
Intermediate 9 steps
php 
<?php
 
namespace App\Services;
 

Building a valid iCalendar feed in PHP in Laravel

ical serialization formatting
Intermediate 8 steps
php 
<?php
 
namespace App\View\Components;
 

Building a breadcrumb component in Laravel

blade components url parsing string manipulation
Intermediate 8 steps
php 
<?php
 
namespace App\Experiments;
 

Weighted random selection in PHP

weighted-random cumulative-sum sampling
Intermediate 8 steps
php 
final class FieldEncryptor
{
    private string $key;
 

Authenticated field encryption with libsodium

encryption libsodium authenticated-encryption
Intermediate 7 steps
php 
<?php
 
final class MarkdownParser
{

Building a small Markdown-to-HTML parser in PHP

state-machine parsing closures
Intermediate 10 steps
php 
<?php
 
namespace App\Console\Commands;
 

Releasing stale document locks in Laravel

artisan-command transactions row-locking
Intermediate 6 steps
php 
<?php
 
namespace App\Providers;
 

Subdomain multi-tenancy routing in Laravel

multi-tenancy service-container route-binding
Advanced 7 steps
php 
<?php
 
namespace App\Broadcasting;
 

Authorizing presence channels in Laravel

broadcasting authorization presence-channels
Intermediate 3 steps
php 
<?php
 
namespace App\Http\Middleware;
 

Resolving the current team in Laravel middleware

middleware multi-tenancy cookies
Intermediate 8 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Broadcasting typing indicators in Laravel

websockets authorization presence-channels
Intermediate 9 steps
php 
<?php
 
namespace App\Services\Reports;
 

Streaming a monthly revenue CSV in Laravel

csv-export lazy-collections eloquent-query
Intermediate 8 steps
php 
<?php
 
namespace App\Services;
 

Computing rolling averages in Laravel

rolling-average date-ranges collections
Intermediate 8 steps
php 
<?php
 
namespace App\Storage;
 

A race-free file counter in PHP

file-locking concurrency atomicity
Intermediate 7 steps