Topic: PHP Basics – Part 1 of 10: Introduction and Syntax
---
1. What is PHP?
• PHP (Hypertext Preprocessor) is a widely-used, open-source server-side scripting language designed for web development.
• Embedded in HTML and used to create dynamic web pages, manage databases, handle forms, sessions, and more.
---
2. Why Use PHP?
• Easy to learn and integrates seamlessly with HTML.
• Works well with MySQL and popular servers like Apache or Nginx.
• Supported by major CMS platforms like WordPress, Drupal, and Joomla.
---
3. PHP Syntax Overview
• PHP code is written inside
• Every PHP statement ends with a semicolon (`;`).
---
4. Basic Output with `echo` and `print`
•
---
5. PHP Variables
• Variables start with a dollar sign (`$`) and are case-sensitive.
---
6. PHP Comments
---
7. Summary
• PHP is a server-side scripting language used to build dynamic web applications.
• Basic syntax includes
---
Exercise
• Write a simple PHP script that defines two variables (
---
#PHP #WebDevelopment #PHPTutorial #ServerSide #Backend
https://t.iss.one/Ebooks2023
---
1. What is PHP?
• PHP (Hypertext Preprocessor) is a widely-used, open-source server-side scripting language designed for web development.
• Embedded in HTML and used to create dynamic web pages, manage databases, handle forms, sessions, and more.
---
2. Why Use PHP?
• Easy to learn and integrates seamlessly with HTML.
• Works well with MySQL and popular servers like Apache or Nginx.
• Supported by major CMS platforms like WordPress, Drupal, and Joomla.
---
3. PHP Syntax Overview
• PHP code is written inside
<?php ... ?> tags.<?php
echo "Hello, World!";
?>
• Every PHP statement ends with a semicolon (`;`).
---
4. Basic Output with `echo` and `print`
<?php
echo "This is output using echo";
print "This is output using print";
?>
•
echo is slightly faster; print returns a value.---
5. PHP Variables
• Variables start with a dollar sign (`$`) and are case-sensitive.
<?php
$name = "Ali";
$age = 25;
echo "My name is $name and I am $age years old.";
?>
---
6. PHP Comments
// Single-line comment
# Also single-line comment
/* Multi-line
comment */
---
7. Summary
• PHP is a server-side scripting language used to build dynamic web applications.
• Basic syntax includes
echo, variables with $, and proper use of <?php ... ?> tags.---
Exercise
• Write a simple PHP script that defines two variables (
$name and $age) and prints a sentence using them.---
#PHP #WebDevelopment #PHPTutorial #ServerSide #Backend
https://t.iss.one/Ebooks2023
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Topic: PHP Basics – Part 2 of 10: Data Types and Operators
---
1. PHP Data Types
PHP supports multiple data types. The most common include:
• String – A sequence of characters.
• Integer – Whole numbers.
• Float (Double) – Decimal numbers.
• Boolean –
• Array – Collection of values.
• Object, NULL, Resource – Used in advanced scenarios.
---
2. Type Checking Functions
---
3. PHP Operators
• Arithmetic Operators
• Assignment Operators
• Comparison Operators
• Logical Operators
---
4. String Concatenation
• Use the dot (
---
5. Summary
• PHP supports multiple data types and a wide variety of operators.
• You can check and manipulate data types easily using built-in functions.
---
Exercise
• Create two variables: one string and one number. Perform arithmetic and string concatenation, and print the results.
---
#PHP #DataTypes #Operators #Backend #PHPTutorial
https://t.iss.one/Ebooks2023
---
1. PHP Data Types
PHP supports multiple data types. The most common include:
• String – A sequence of characters.
$name = "Ali";
• Integer – Whole numbers.
$age = 30;
• Float (Double) – Decimal numbers.
$price = 19.99;
• Boolean –
true or false.$is_active = true;
• Array – Collection of values.
$colors = array("red", "green", "blue");• Object, NULL, Resource – Used in advanced scenarios.
---
2. Type Checking Functions
var_dump($variable); // Displays type and value
is_string($name); // Returns true if $name is a string
is_array($colors); // Returns true if $colors is an array
---
3. PHP Operators
• Arithmetic Operators
$a = 10;
$b = 3;
echo $a + $b; // Addition
echo $a - $b; // Subtraction
echo $a * $b; // Multiplication
echo $a / $b; // Division
echo $a % $b; // Modulus
• Assignment Operators
$x = 5;
$x += 3; // same as $x = $x + 3
• Comparison Operators
$a == $b // Equal
$a === $b // Identical (value + type)
$a != $b // Not equal
$a > $b // Greater than
• Logical Operators
($a > 0 && $b > 0) // AND
($a > 0 || $b > 0) // OR
!$a // NOT
---
4. String Concatenation
• Use the dot (
.) operator to join strings.$first = "Hello";
$second = "World";
echo $first . " " . $second;
---
5. Summary
• PHP supports multiple data types and a wide variety of operators.
• You can check and manipulate data types easily using built-in functions.
---
Exercise
• Create two variables: one string and one number. Perform arithmetic and string concatenation, and print the results.
---
#PHP #DataTypes #Operators #Backend #PHPTutorial
https://t.iss.one/Ebooks2023
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Topic: PHP Basics – Part 5 of 10: Functions in PHP (User-Defined, Built-in, Parameters, Return)
---
1. What is a Function in PHP?
• A function is a block of code that performs a specific task and can be reused.
• PHP has many built-in functions, and you can also create your own user-defined functions.
---
2. Creating User-Defined Functions
• Function names are case-insensitive.
---
3. Functions with Parameters
• Functions can accept arguments (input values):
• You can pass multiple parameters:
---
4. Default Parameter Values
• Parameters can have default values if not passed during the call:
---
5. Returning Values from Functions
• Use the
---
6. Variable Scope in PHP
• Local Scope: Variable declared inside function – only accessible there.
• Global Scope: Variable declared outside – accessible inside with
---
7. Anonymous Functions (Closures)
• Functions without a name – often used as callbacks.
---
8. Recursive Functions
• A function that calls itself.
---
9. Built-in PHP Functions (Examples)
•
•
•
•
•
---
10. Summary
• Functions keep your code organized, reusable, and clean.
• Mastering parameters, return values, and scopes is key to effective programming.
---
Exercise
• Write a function that takes a name and age, and returns a sentence like:
• Then, write a recursive function to compute the factorial of a number.
---
#PHP #Functions #PHPTutorial #WebDevelopment #Backend
https://t.iss.one/Ebooks2023
---
1. What is a Function in PHP?
• A function is a block of code that performs a specific task and can be reused.
• PHP has many built-in functions, and you can also create your own user-defined functions.
---
2. Creating User-Defined Functions
function greet() {
echo "Hello, welcome to PHP!";
}
greet(); // Call the function• Function names are case-insensitive.
---
3. Functions with Parameters
• Functions can accept arguments (input values):
function greetUser($name) {
echo "Hello, $name!";
}
greetUser("Ali"); // Output: Hello, Ali!• You can pass multiple parameters:
function add($a, $b) {
return $a + $b;
}
echo add(3, 5); // Output: 8---
4. Default Parameter Values
• Parameters can have default values if not passed during the call:
function greetLanguage($name, $lang = "English") {
echo "Hello $name, language: $lang";
}
greetLanguage("Sara"); // Output: Hello Sara, language: English---
5. Returning Values from Functions
function square($num) {
return $num * $num;
}
$result = square(6);
echo $result; // Output: 36• Use the
return statement to send a value back from the function.---
6. Variable Scope in PHP
• Local Scope: Variable declared inside function – only accessible there.
• Global Scope: Variable declared outside – accessible inside with
global.$x = 5;
function showX() {
global $x;
echo $x;
}
showX(); // Output: 5
---
7. Anonymous Functions (Closures)
• Functions without a name – often used as callbacks.
$square = function($n) {
return $n * $n;
};
echo $square(4); // Output: 16---
8. Recursive Functions
• A function that calls itself.
function factorial($n) {
if ($n <= 1) return 1;
return $n * factorial($n - 1);
}
echo factorial(5); // Output: 120---
9. Built-in PHP Functions (Examples)
•
strlen($str) – Get string length•
strtoupper($str) – Convert to uppercase•
array_sum($arr) – Sum of array elements•
isset($var) – Check if variable is set•
empty($var) – Check if variable is empty---
10. Summary
• Functions keep your code organized, reusable, and clean.
• Mastering parameters, return values, and scopes is key to effective programming.
---
Exercise
• Write a function that takes a name and age, and returns a sentence like:
"My name is Ali and I am 30 years old."• Then, write a recursive function to compute the factorial of a number.
---
#PHP #Functions #PHPTutorial #WebDevelopment #Backend
https://t.iss.one/Ebooks2023
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# 📚 Connecting MySQL with Popular Web Frameworks
#MySQL #WebDev #Frameworks #Django #Laravel #Flask #ASPNET #Spring
MySQL is widely used in web development. Here’s how to connect it with top web frameworks.
---
## 🔹 1. Django (Python) with MySQL
#Django #Python #MySQL
Use
1️⃣ Install the driver:
2️⃣ Update `settings.py`:
3️⃣ If using `pymysql`, add this to `__init__.py`:
---
## 🔹 2. Laravel (PHP) with MySQL
#Laravel #PHP #MySQL
Laravel has built-in MySQL support.
1️⃣ Configure `.env`:
2️⃣ Run migrations:
---
## 🔹 3. Flask (Python) with MySQL
#Flask #Python #MySQL
Use
### Option 1: Using `flask-mysqldb`
### Option 2: Using SQLAlchemy
---
## 🔹 4. ASP.NET Core with MySQL
#ASPNET #CSharp #MySQL
Use
1️⃣ Install the package:
2️⃣ Configure in `Startup.cs`:
---
## 🔹 5. Spring Boot (Java) with MySQL
#SpringBoot #Java #MySQL
1️⃣ Add dependency in `pom.xml`:
2️⃣ Configure `application.properties`:
3️⃣ JPA Entity Example:
---
## 🔹 6. Express.js (Node.js) with MySQL
#Express #NodeJS #MySQL
Use
### Option 1: Using `mysql2`
### Option 2: Using Sequelize (ORM)
---
### 📌 Conclusion
MySQL integrates smoothly with all major web frameworks. Choose the right approach based on your stack!
#WebDevelopment #Backend #MySQLIntegration
🚀 Happy Coding! 🚀
#MySQL #WebDev #Frameworks #Django #Laravel #Flask #ASPNET #Spring
MySQL is widely used in web development. Here’s how to connect it with top web frameworks.
---
## 🔹 1. Django (Python) with MySQL
#Django #Python #MySQL
Use
mysqlclient or pymysql. 1️⃣ Install the driver:
pip install mysqlclient # Recommended
# OR
pip install pymysql
2️⃣ Update `settings.py`:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'your_database',
'USER': 'your_username',
'PASSWORD': 'your_password',
'HOST': 'localhost',
'PORT': '3306',
}
}3️⃣ If using `pymysql`, add this to `__init__.py`:
import pymysql
pymysql.install_as_MySQLdb()
---
## 🔹 2. Laravel (PHP) with MySQL
#Laravel #PHP #MySQL
Laravel has built-in MySQL support.
1️⃣ Configure `.env`:
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=your_database
DB_USERNAME=your_username
DB_PASSWORD=your_password
2️⃣ Run migrations:
php artisan migrate
---
## 🔹 3. Flask (Python) with MySQL
#Flask #Python #MySQL
Use
flask-mysqldb or SQLAlchemy. ### Option 1: Using `flask-mysqldb`
from flask import Flask
from flask_mysqldb import MySQL
app = Flask(__name__)
app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'your_username'
app.config['MYSQL_PASSWORD'] = 'your_password'
app.config['MYSQL_DB'] = 'your_database'
mysql = MySQL(app)
@app.route('/')
def index():
cur = mysql.connection.cursor()
cur.execute("SELECT * FROM your_table")
data = cur.fetchall()
return str(data)
### Option 2: Using SQLAlchemy
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://username:password@localhost/your_database'
db = SQLAlchemy(app)
---
## 🔹 4. ASP.NET Core with MySQL
#ASPNET #CSharp #MySQL
Use
Pomelo.EntityFrameworkCore.MySql. 1️⃣ Install the package:
dotnet add package Pomelo.EntityFrameworkCore.MySql
2️⃣ Configure in `Startup.cs`:
services.AddDbContext<ApplicationDbContext>(options =>
options.UseMySql(
"server=localhost;database=your_database;user=your_username;password=your_password",
ServerVersion.AutoDetect("server=localhost;database=your_database")
)
);
---
## 🔹 5. Spring Boot (Java) with MySQL
#SpringBoot #Java #MySQL
1️⃣ Add dependency in `pom.xml`:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
2️⃣ Configure `application.properties`:
spring.datasource.url=jdbc:mysql://localhost:3306/your_database
spring.datasource.username=your_username
spring.datasource.password=your_password
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
3️⃣ JPA Entity Example:
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
// Getters & Setters
}
---
## 🔹 6. Express.js (Node.js) with MySQL
#Express #NodeJS #MySQL
Use
mysql2 or sequelize. ### Option 1: Using `mysql2`
const mysql = require('mysql2');
const connection = mysql.createConnection({
host: 'localhost',
user: 'your_username',
password: 'your_password',
database: 'your_database'
});
connection.query('SELECT * FROM users', (err, results) => {
console.log(results);
});### Option 2: Using Sequelize (ORM)
const { Sequelize } = require('sequelize');
const sequelize = new Sequelize('your_database', 'your_username', 'your_password', {
host: 'localhost',
dialect: 'mysql'
});
// Test connection
sequelize.authenticate()
.then(() => console.log('Connected!'))
.catch(err => console.error('Error:', err));---
### 📌 Conclusion
MySQL integrates smoothly with all major web frameworks. Choose the right approach based on your stack!
#WebDevelopment #Backend #MySQLIntegration
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📌 How to Get Started with PocketBase: Build a Lightweight Backend in Minutes
✍️ Manish Shivanandhan
🏷️ #backend
✍️ Manish Shivanandhan
🏷️ #backend
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