Merge pull request #3835 from sivaprasath2004/sivaprasath-closes-issue-3802

[Feature]: Add php Course

Author: ajay-dhangar

courses/php/Overview.md

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+### PHP Course Outline
+
+#### Beginner Level
+
+**1. Introduction to PHP**
+   - What is PHP & Features
+   - Setting up the development environment 
+
+**2. Basic Syntax and Structure**
+   - PHP tags and basic syntax 
+   - Operators (arithmetic, comparison, logical, assignment)
+
+**3. Control Structures**
+   - Conditional statements (if, if-else, switch-case)
+   - Loops (for, while, do-while, foreach) 
+
+**4. Functions**
+   - Defining functions 
+   - Variable scope (global vs. local) 
+
+**5. Arrays and Strings**
+   - Arrays
+   - Strings
+
+**6. Forms and User Input**
+   - Forms and Input
+   - Validating and sanitizing user input 
+
+**7. Basic File Handling**
+   - Basic File Handling
+   - Uploading files
+
+#### Intermediate Level
+
+**1. Sessions and Cookies**
+   - sessions 
+   - cookies
+
+**2. Object-Oriented Programming (OOP)**
+   - Concept
+
+**3. Error Handling**
+   - Error types (syntax, runtime, logical) 
+   - Custom error handlers 
+
+**4. Working with XML and JSON**
+   - XML 
+   - JSON 
+
+**5. Email Handling**
+   - Handling Email 
+   - Working with PHPMailer 
+
+#### Advanced Level
+
+**1. Advanced Arrays**
+   - Concept
+
+**2. Advanced OOP Concepts**
+   - Abstract classes and interfaces 
+   - Static properties and methods 
+
+**3. Advanced Database Interaction**
+   - Introduction to SQL and databases
+   - Introduction to NoSQL and database
+
+**4. Web Services and APIs**
+   - Introduction to RESTful APIs 
+   - Working with SOAP 
+
+**5. PHP Frameworks**
+   - Introduction to PHP frameworks 
+   - MVC architecture 
+ 

courses/php/_category_.json

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+{
+    "label": "php",
+    "position": 15,
+    "link": {
+      "type": "generated-index",
+      "description": "Learn php."
+    }
+  }

courses/php/advance-level/Advance-Database-iteration/NOSQL.md

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+---
+id: lesson-2
+title: "NoSQL Database(MongoDB)"
+sidebar_label: NoSQL Database
+sidebar_position: 2
+description: "Learn NoSQL Database in PHP"
+tags: [courses,Advance-level,Introduction]
+---  
+
+#### Topics Covered:
+1. **Connecting to MongoDB:**
+2. **Inserting Data:**
+3. **Querying Data:**
+4. **Updating Data:**
+5. **Deleting Data:**
+
+**Connecting to MongoDB:**
+
+```php
+<?php
+require 'vendor/autoload.php'; // include Composer's autoloader
+$client = new MongoDB\Client("mongodb://localhost:27017");
+$collection = $client->myDatabase->users;
+?>
+```
+
+**Inserting Data:**
+
+```php
+<?php
+$insertOneResult = $collection->insertOne([
+    'username' => 'john_doe',
+    'email' => '[email protected]'
+]);
+echo "Inserted with Object ID '{$insertOneResult->getInsertedId()}'";
+?>
+```
+
+**Querying Data:**
+
+```php
+<?php
+$user = $collection->findOne(['username' => 'john_doe']);
+echo "User email: " . $user['email'];
+?>
+```
+
+**Updating Data:**
+
+```php
+<?php
+$updateResult = $collection->updateOne(
+    ['username' => 'john_doe'],
+    ['$set' => ['email' => '[email protected]']]
+);
+echo "Matched {$updateResult->getMatchedCount()} document(s)\n";
+echo "Modified {$updateResult->getModifiedCount()} document(s)\n";
+?>
+```
+
+**Deleting Data:**
+
+```php
+<?php
+$deleteResult = $collection->deleteOne(['username' => 'john_doe']);
+echo "Deleted {$deleteResult->getDeletedCount()} document(s)\n";
+?>
+```
+ 
+
+:::tip 
+- When working with NoSQL databases like MongoDB, leverage its flexible schema and powerful querying capabilities.
+:::

courses/php/advance-level/Advance-Database-iteration/SQL.md

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+---
+id: lesson-1
+title: "SQL Database"
+sidebar_label: SQL Database
+sidebar_position: 1
+description: "Learn SQL Database in PHP"
+tags: [courses,Advance-level,Introduction]
+---  
+ 
+
+#### Topics Covered:
+1. Introduction to SQL and Databases
+2. Connecting to a Database with PHP (MySQL, PDO)
+3. Performing CRUD Operations (Create, Read, Update, Delete)
+4. Prepared Statements and Parameter Binding
+
+### Flowchart 
+
+```mermaid
+graph TD
+    A[Start]
+    B{Choose CRUD Operation}
+    C[Create => INSERT]
+    D[Read => SELECT]
+    E[Update => UPDATE]
+    F[Delete => DELETE]
+    G[Insert new record into database]
+    H[Fetch records from database]
+    I[Update existing record in database]
+    J[Delete record from database]
+
+    A --> B
+    B -->|Create| C
+    B -->|Read| D
+    B -->|Update| E
+    B -->|Delete| F
+    C --> G
+    D --> H
+    E --> I
+    F --> J
+```
+
+### 1. Introduction to SQL and Databases
+
+**SQL (Structured Query Language):**
+- SQL is used to communicate with databases. It is the standard language for relational database management systems.
+
+**Basic SQL Commands:**
+- **CREATE DATABASE:** Creates a new database.
+- **CREATE TABLE:** Creates a new table in the database.
+- **INSERT INTO:** Inserts new data into a table.
+- **SELECT:** Retrieves data from a database.
+- **UPDATE:** Updates existing data within a table.
+- **DELETE:** Deletes data from a table.
+
+```sql
+-- Example SQL Commands
+CREATE DATABASE myDatabase;
+CREATE TABLE users (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL,
+    email VARCHAR(100) NOT NULL
+);
+
+INSERT INTO users (username, email) VALUES ('john_doe', '[email protected]');
+SELECT * FROM users;
+UPDATE users SET email='[email protected]' WHERE username='john_doe';
+DELETE FROM users WHERE username='john_doe';
+```
+
+### 2. Connecting to a Database with PHP (MySQL, PDO)
+
+**Using MySQLi:**
+
+```php
+<?php
+$servername = "localhost";
+$username = "root";
+$password = "";
+$dbname = "myDatabase";
+
+// Create connection
+$conn = new mysqli($servername, $username, $password, $dbname);
+
+// Check connection
+if ($conn->connect_error) {
+    die("Connection failed: " . $conn->connect_error);
+}
+echo "Connected successfully";
+?>
+```
+
+**Using PDO:**
+
+```php
+<?php
+$dsn = 'mysql:host=localhost;dbname=myDatabase';
+$username = 'root';
+$password = '';
+
+try {
+    $pdo = new PDO($dsn, $username, $password);
+    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    echo "Connected successfully";
+} catch (PDOException $e) {
+    echo "Connection failed: " . $e->getMessage();
+}
+?>
+```
+
+### 3. Performing CRUD Operations (Create, Read, Update, Delete)
+
+**Create (INSERT):**
+
+```php
+<?php
+$sql = "INSERT INTO users (username, email) VALUES ('jane_doe', '[email protected]')";
+if ($conn->query($sql) === TRUE) {
+    echo "New record created successfully";
+} else {
+    echo "Error: " . $sql . "<br>" . $conn->error;
+}
+?>
+```
+
+**Read (SELECT):**
+
+```php
+<?php
+$sql = "SELECT id, username, email FROM users";
+$result = $conn->query($sql);
+
+if ($result->num_rows > 0) {
+    while($row = $result->fetch_assoc()) {
+        echo "id: " . $row["id"]. " - Name: " . $row["username"]. " - Email: " . $row["email"]. "<br>";
+    }
+} else {
+    echo "0 results";
+}
+?>
+```
+
+**Update (UPDATE):**
+
+```php
+<?php
+$sql = "UPDATE users SET email='[email protected]' WHERE username='jane_doe'";
+if ($conn->query($sql) === TRUE) {
+    echo "Record updated successfully";
+} else {
+    echo "Error updating record: " . $conn->error;
+}
+?>
+```
+
+**Delete (DELETE):**
+
+```php
+<?php
+$sql = "DELETE FROM users WHERE username='jane_doe'";
+if ($conn->query($sql) === TRUE) {
+    echo "Record deleted successfully";
+} else {
+    echo "Error deleting record: " . $conn->error;
+}
+?>
+```
+
+### 4. Prepared Statements and Parameter Binding
+
+**Using MySQLi:**
+
+```php
+<?php
+$stmt = $conn->prepare("INSERT INTO users (username, email) VALUES (?, ?)");
+$stmt->bind_param("ss", $username, $email);
+
+$username = "mike_doe";
+$email = "[email protected]";
+$stmt->execute();
+
+echo "New records created successfully";
+
+$stmt->close();
+$conn->close();
+?>
+```
+
+**Using PDO:**
+
+```php
+<?php
+$stmt = $pdo->prepare("INSERT INTO users (username, email) VALUES (:username, :email)");
+$stmt->bindParam(':username', $username);
+$stmt->bindParam(':email', $email);
+
+$username = "anna_doe";
+$email = "[email protected]";
+$stmt->execute();
+
+echo "New records created successfully";
+?>
+```
+
+:::tip
+- Always use prepared statements to protect against SQL injection.
+- Choose PDO over MySQLi for more flexibility and support for multiple databases.
+- Properly handle errors and exceptions to debug issues effectively.
+- Keep your database connection credentials secure and avoid hardcoding them in your scripts.
+:::

courses/php/advance-level/Advance-Database-iteration/_category_.json

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+{
+    "label": "Working with Databases",
+    "position": 3,
+    "link": {
+      "type": "generated-index",
+      "description": "Learn Advanced Database Iteration."
+    }
+  }