# slayer-1010/shoe_shopping_system architecture

> Architecture diagram of the GitHub repository slayer-1010/shoe_shopping_system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-11). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/slayer-1010/shoe_shopping_system
- Repository: https://github.com/slayer-1010/shoe_shopping_system

## Overview

This is a PHP shoe-commerce website. Shoppers register or log in, browse products, add and adjust cart items, then check out; checkout records an order, updates stock, creates a PDF invoice, and redirects to confirmation. Account editing and admin catalog management are separate capabilities. The excerpts establish the main database and invoice relationships, but several endpoints and the confirmation implementation were not sampled, so their detailed connections are omitted.

Main entry points: [`db.php`](https://github.com/slayer-1010/shoe_shopping_system/blob/main/db.php) (MySQL connection), [`checkout.php`](https://github.com/slayer-1010/shoe_shopping_system/blob/main/checkout.php) (Order checkout), [`cart.php`](https://github.com/slayer-1010/shoe_shopping_system/blob/main/cart.php) (Cart view), [`login.php`](https://github.com/slayer-1010/shoe_shopping_system/blob/main/login.php) (Sign in)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_accounts["Accounts & profiles"]
  node_login["Sign in<br/>[login.php]"]
  node_register["Registration<br/>[register.php]"]
  node_profile["Profile editing<br/>[edit_profile.php]"]
end

subgraph group_catalog["Storefront &amp; catalog"]
  node_home["Product storefront<br/>[index1.php]"]
  node_home_alt["Home &amp; profile<br/>[index.php]"]
  node_details["Product details<br/>[product_detail.php]"]
  node_about["About &amp; brands<br/>[about.php]"]
  node_admin["Catalog admin<br/>[admin.php]"]
end

subgraph group_orders["Cart &amp; checkout"]
  node_add["Add to cart<br/>[add_to_cart.php]"]
  node_cart["Cart view<br/>[cart.php]"]
  node_shopping["Shopping cart<br/>[shopping_cart.php]"]
  node_update["Update cart<br/>[update_cart.php]"]
  node_remove["Remove item<br/>[remove_item.php]"]
  node_checkout["Order checkout<br/>[checkout.php]"]
  node_confirmation["Order confirmation<br/>[confirmation.php]"]
end

subgraph group_platform["Data &amp; documents"]
  node_db[("MySQL connection<br/>[db.php]")]
  node_pdf["PDF generator<br/>[fpdf.php]"]
  node_invoice["Invoice files"]
end

node_shopper(("Shopper"))

node_shopper -->|"signs in"| node_login
node_shopper -->|"registers"| node_register
node_shopper -.->|"browses"| node_home
node_shopper -.->|"views product"| node_details
node_shopper -.->|"edits profile"| node_profile
node_register -->|"stores account"| node_db
node_login -->|"checks credentials"| node_db
node_home -->|"queries products"| node_db
node_home_alt -->|"loads account"| node_db
node_details -->|"loads product"| node_db
node_about -.->|"loads content"| node_db
node_admin -->|"manages records"| node_db
node_profile -->|"updates account"| node_db
node_shopper -.->|"adds product"| node_add
node_add -->|"writes cart"| node_db
node_cart -->|"reads cart"| node_db
node_cart -->|"posts quantity"| node_update
node_update -->|"updates cart"| node_db
node_shopper -.->|"removes item"| node_remove
node_remove -->|"deletes item"| node_db
node_shopper -.->|"checks out"| node_checkout
node_checkout -->|"records order"| node_db
node_checkout -->|"generates invoice"| node_pdf
node_checkout -->|"writes PDF"| node_invoice
node_checkout -->|"redirects"| node_confirmation

click node_login "https://github.com/slayer-1010/shoe_shopping_system/blob/main/login.php"
click node_register "https://github.com/slayer-1010/shoe_shopping_system/blob/main/register.php"
click node_profile "https://github.com/slayer-1010/shoe_shopping_system/blob/main/edit_profile.php"
click node_home "https://github.com/slayer-1010/shoe_shopping_system/blob/main/index1.php"
click node_home_alt "https://github.com/slayer-1010/shoe_shopping_system/blob/main/index.php"
click node_details "https://github.com/slayer-1010/shoe_shopping_system/blob/main/product_detail.php"
click node_about "https://github.com/slayer-1010/shoe_shopping_system/blob/main/about.php"
click node_admin "https://github.com/slayer-1010/shoe_shopping_system/blob/main/admin.php"
click node_add "https://github.com/slayer-1010/shoe_shopping_system/blob/main/add_to_cart.php"
click node_cart "https://github.com/slayer-1010/shoe_shopping_system/blob/main/cart.php"
click node_shopping "https://github.com/slayer-1010/shoe_shopping_system/blob/main/shopping_cart.php"
click node_update "https://github.com/slayer-1010/shoe_shopping_system/blob/main/update_cart.php"
click node_remove "https://github.com/slayer-1010/shoe_shopping_system/blob/main/remove_item.php"
click node_checkout "https://github.com/slayer-1010/shoe_shopping_system/blob/main/checkout.php"
click node_confirmation "https://github.com/slayer-1010/shoe_shopping_system/blob/main/confirmation.php"
click node_db "https://github.com/slayer-1010/shoe_shopping_system/blob/main/db.php"
click node_pdf "https://github.com/slayer-1010/shoe_shopping_system/blob/main/fpdf/fpdf.php"
click node_invoice "https://github.com/slayer-1010/shoe_shopping_system/tree/main/invoices"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_login,node_register,node_profile toneBlue
class node_home,node_home_alt,node_details,node_about,node_admin toneAmber
class node_add,node_cart,node_shopping,node_update,node_remove,node_checkout,node_confirmation toneMint
class node_db,node_pdf,node_invoice toneRose
class node_shopper toneIndigo
```

## Components

### Accounts & profiles

- [Sign in](https://github.com/slayer-1010/shoe_shopping_system/blob/main/login.php): `login.php`
- [Registration](https://github.com/slayer-1010/shoe_shopping_system/blob/main/register.php): `register.php`
- [Profile editing](https://github.com/slayer-1010/shoe_shopping_system/blob/main/edit_profile.php): `edit_profile.php`

### Storefront & catalog

- [Product storefront](https://github.com/slayer-1010/shoe_shopping_system/blob/main/index1.php): `index1.php`
- [Home & profile](https://github.com/slayer-1010/shoe_shopping_system/blob/main/index.php): `index.php`
- [Product details](https://github.com/slayer-1010/shoe_shopping_system/blob/main/product_detail.php): `product_detail.php`
- [About & brands](https://github.com/slayer-1010/shoe_shopping_system/blob/main/about.php): `about.php`
- [Catalog admin](https://github.com/slayer-1010/shoe_shopping_system/blob/main/admin.php): `admin.php`

### Cart & checkout

- [Add to cart](https://github.com/slayer-1010/shoe_shopping_system/blob/main/add_to_cart.php): `add_to_cart.php`
- [Cart view](https://github.com/slayer-1010/shoe_shopping_system/blob/main/cart.php): `cart.php`
- [Shopping cart](https://github.com/slayer-1010/shoe_shopping_system/blob/main/shopping_cart.php): `shopping_cart.php`
- [Update cart](https://github.com/slayer-1010/shoe_shopping_system/blob/main/update_cart.php): `update_cart.php`
- [Remove item](https://github.com/slayer-1010/shoe_shopping_system/blob/main/remove_item.php): `remove_item.php`
- [Order checkout](https://github.com/slayer-1010/shoe_shopping_system/blob/main/checkout.php): `checkout.php`
- [Order confirmation](https://github.com/slayer-1010/shoe_shopping_system/blob/main/confirmation.php): `confirmation.php`

### Data & documents

- [MySQL connection](https://github.com/slayer-1010/shoe_shopping_system/blob/main/db.php): `db.php`
- [PDF generator](https://github.com/slayer-1010/shoe_shopping_system/blob/main/fpdf/fpdf.php): `fpdf/fpdf.php`
- [Invoice files](https://github.com/slayer-1010/shoe_shopping_system/tree/main/invoices): `invoices`

### Other components

- **Shopper**

## Connections

- Shopper → Sign in: signs in (evidence: `login.php`)
- Shopper → Registration: registers (evidence: `register.php`)
- Shopper → Product storefront: browses
- Shopper → Product details: views product
- Shopper → Profile editing: edits profile
- Registration → MySQL connection: stores account (evidence: `register.php`)
- Sign in → MySQL connection: checks credentials (evidence: `login.php`)
- Product storefront → MySQL connection: queries products (evidence: `index1.php`)
- Home & profile → MySQL connection: loads account (evidence: `index.php`)
- Product details → MySQL connection: loads product (evidence: `product_detail.php`)
- About & brands → MySQL connection: loads content (evidence: `about.php`)
- Catalog admin → MySQL connection: manages records (evidence: `admin.php`)
- Profile editing → MySQL connection: updates account (evidence: `edit_profile.php`)
- Shopper → Add to cart: adds product
- Add to cart → MySQL connection: writes cart (evidence: `add_to_cart.php`)
- Cart view → MySQL connection: reads cart (evidence: `cart.php`)
- Cart view → Update cart: posts quantity (evidence: `cart.php`)
- Update cart → MySQL connection: updates cart (evidence: `update_cart.php`)
- Shopper → Remove item: removes item
- Remove item → MySQL connection: deletes item (evidence: `remove_item.php`)
- Shopper → Order checkout: checks out
- Order checkout → MySQL connection: records order (evidence: `checkout.php`)
- Order checkout → PDF generator: generates invoice (evidence: `checkout.php`)
- Order checkout → Invoice files: writes PDF (evidence: `checkout.php`)
- Order checkout → Order confirmation: redirects (evidence: `checkout.php`)