Code Explainers

Php code explainers

php 
<?php
 
class NameParser
{

Parsing a full name into components in PHP

string-parsing arrays normalization
Intermediate 8 steps
php 
<?php
 
namespace App\Services\Checkout;
 

Validating coupons with Laravel's Pipeline

pipeline chain of responsibility transactions
Intermediate 7 steps
php 
<?php
 
namespace App\Services;
 

How a password strength validator works in PHP

validation regular-expressions data-driven
Intermediate 8 steps
php 
<?php
 
namespace App\Services;
 

Building a cached daily leaderboard in Laravel

caching aggregation eager-loading
Intermediate 9 steps
php 
<?php
 
final class RotatingFileLogger
{

How a rotating file logger works in PHP

logging file-rotation io
Intermediate 9 steps
php 
class TwoFactorController extends Controller
{
    public function show(Request $request): View|RedirectResponse
    {

Two-factor auth challenge flow in Laravel

authentication two-factor middleware
Intermediate 10 steps
php 
<?php
 
namespace App\Models;
 

Storing JSON preferences in a Laravel model

eloquent casting json
Intermediate 7 steps
php 
<?php
 
declare(strict_types=1);
 

Counting business days in PHP

dates immutability hash-lookup
Intermediate 7 steps
php 
<?php
 
namespace App\Services;
 

A cached settings service in Laravel

caching memoization cache-invalidation
Intermediate 8 steps
php 
final class FormEditorHistory
{
    private SplStack $undoStack;
    private SplStack $redoStack;

Undo/redo with two stacks in PHP

undo-redo stack state-management
Intermediate 9 steps
php 
<?php
 
namespace App\Reports;
 

Bucketing spending by time period in Laravel

aggregation date-bucketing collections
Intermediate 9 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Conditional query building in Laravel

query-builder conditional-logic closures
Intermediate 7 steps
php 
<?php
 
namespace App\Notifications;
 

Delayed, self-cancelling emails in Laravel

queues notifications delayed-jobs
Intermediate 7 steps
php 
<?php
 
namespace App\Support;
 

Detecting file types by MIME in PHP

file-validation mime-detection whitelist
Intermediate 7 steps
php 
<?php
 
namespace App\Http\Controllers;
 

Serving cached translations from a Laravel controller

http-caching etag localization
Intermediate 8 steps
php 
<?php
 
namespace App\Services;
 

Validating coupons before applying a discount in Laravel

validation guard clauses business rules
Intermediate 7 steps
php 
<?php
 
namespace App\Services\Analytics;
 

Building a signup chart with Laravel's query builder

aggregation date-ranges query-builder
Intermediate 6 steps
php 
<?php
 
function streamFileWithRanges(string $path, ?string $rangeHeader): void
{

How HTTP range requests stream files in PHP

http-range-requests streaming partial-content
Intermediate 10 steps