Code Explainers

Php code explainers

php 
<?php
 
namespace App\Http\Support;
 

Adding RFC 5988 Link headers in Laravel

pagination http-headers rest-api
Intermediate 7 steps
php 
<?php
 
declare(strict_types=1);
 

Streaming a fixed-width file into typed objects

generators value-objects file-parsing
Intermediate 8 steps
php 
<?php
 
namespace App\Jobs;
 

A retrying queue job in Laravel

queues background-jobs retries
Intermediate 7 steps
php 
final class Container
{
    private array $bindings = [];
    private array $instances = [];

Building a DI container with reflection in PHP

dependency-injection reflection autowiring
Advanced 9 steps
php 
<?php
 
namespace App\Providers;
 

Defining feature flags with Laravel Pennant

feature-flags service-provider config-driven
Intermediate 6 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Email confirmation with signed URLs in Laravel

signed-urls email-verification middleware
Intermediate 6 steps
php 
<?php
 
namespace App\RateLimiting;
 

Sliding-window rate limiting with Redis sorted sets

rate-limiting redis sorted-sets
Advanced 8 steps
php 
<?php
 
namespace App\Models\Concerns;
 

How an Auditable trait logs Eloquent changes in Laravel

traits model-events polymorphic-relations
Intermediate 8 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Server-Sent Events in Laravel

server-sent-events streaming long-polling
Advanced 9 steps
php 
<?php
 
namespace App\Actions\Imports;
 

Streaming CSV imports with Laravel batches

lazy-collections job-batching streaming
Advanced 9 steps
php 
namespace App\Providers;
 
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Log;

Catching N+1 queries with Eloquent strict mode in Laravel

n+1 queries strict mode eager loading
Intermediate 7 steps
php 
<?php
 
namespace App\Support;
 

Recursively finding files with SPL iterators in PHP

recursion iterators filesystem
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Requests;
 

A validated date-range value object in PHP

value-object validation immutability
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Controllers\Api;
 

Building a cursor-paginated feed in Laravel

cursor-pagination eager-loading validation
Intermediate 8 steps
php 
<?php
 
namespace App\Services;
 

Caching per-tenant settings in Laravel

caching multi-tenancy dependency-injection
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Middleware;
 

Idempotency keys in Laravel middleware

idempotency middleware caching
Advanced 8 steps
php 
<?php
 
namespace App\Console\Commands;
 

How a database backup command works in Laravel

artisan-command shell-process error-handling
Intermediate 8 steps
php 
function fuzzySearch(string $query, array $items, int $limit = 10): array
{
    $query = mb_strtolower(trim($query));
 

Building a ranked fuzzy search in PHP

fuzzy-search string-matching ranking
Intermediate 7 steps