https://github.com/kkent030315/chatapp
A PHP-Based Simple Chat Web App.
https://github.com/kkent030315/chatapp
Last synced: 7 months ago
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A PHP-Based Simple Chat Web App.
- Host: GitHub
- URL: https://github.com/kkent030315/chatapp
- Owner: kkent030315
- Created: 2020-09-05T18:52:43.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2020-09-09T14:34:41.000Z (about 5 years ago)
- Last Synced: 2025-02-28T22:18:19.913Z (7 months ago)
- Language: PHP
- Size: 244 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# ChatApp
A PHP-Based Simple Chat Web App.
# Environments
Tested on `Apache 2.4.43`
- `PHP 7.2.31`
- `MySQL`
- No dependencies with any other packages.
# Implementation of HttpRequest
What I thought is that, could I make this more simpler?
```php
if (isset($_POST['trigger_query'])) {
// Request processes...
}
```
This implementation is quite simple, but it could make a source complicated, and less-legibility.
So I've implemented a simple class that provides HttpRequest-Handling more easily, and reliable.
It'll look like:
```php
/* Parameters: Method, TriggerQuery, Callback-Function */
// Execute the function in a specific namespace,
// if the query 'login' is executed. with the HTTP_POST.
HTTP_HANDLER\RegisterHttpRequestHandler(HTTP_POST, 'login', 'APP\ExecAuthenticate');
// We can execute anonymous function as well.
HTTP_HANDLER\RegisterHttpRequestHandler(HTTP_POST, 'login', function() {
echo ('Are you tryna login?');
});
```
Very easy, good-looks.
# Implementation of Errors and Exceptions Handling
This is how the system handles fatal exceptions/errors at the low-level.
```php
// This function must be called at anytime, anywhere.
function errorCallbackReceiver() {
echo('Fatal error occurred, Please try again later.');
}
class ServiceCore {
function __construct(... $callbackFunc) {
// Pass it to the another provider.
$low_level_impl = new LowLevelImpl(... $callbackFunc);
}
}
```
# Implementation of Chatting
The implementation of chatting is quite simple.
## Send Chat
Store the message context with the sender and recipient names.
```php
$queryString = "INSERT INTO `chats`
(`sender`, `recipient`, `context`)
VALUES
('$this->selfName', '$this->recipientName', '$message')";
$queryResult = $this->db->IssueQuery($queryString);
```
## Receive Incoming Chats
Simply `select` the chats sorting by `datetime`.
```php
$queryString = "SELECT * FROM `chats`
WHERE
(`sender`='$this->recipientName' AND `recipient`='$this->selfName')
OR
(`sender`='$this->selfName' AND `recipient`='$this->recipientName')
ORDER BY `datetime`
LIMIT $numberOfMessages";
$queryResult = $this->db->IssueQuery($queryString);
```
## Database Schema
### Columns
- `sender` `TEXT(64)` # sender of the message
- `recipient` `TEXT(64)` # recipient of the message
- `context` `TEXT(1024)` # context of the message, maximum 1024 characters accepted.
- `datetime` `DATETIME` `CURRENT_TIMESTAMP()` # shows that when the message context created
- `readed` `TINYINT` # shows that the message got readed or not. as boolean(1 true or zero false)
# About The Security
Secruity features are incomplete since this is not for public.