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Static, Final, and Initialization Blocks

Table of Contents Introduction to Static, Final, and Initialization Blocks The Static Keyword in Java Static Variables Static Methods Static Blocks The Final Keyword in Java Final Variables Final Methods Final Classes Initialization Blocks...
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Encapsulation and Access Modifiers

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Abstraction and Interfaces in Java

Table of Contents Introduction to Abstraction Types of Abstraction in Java Abstract Classes Interfaces Abstract Classes: Deep Dive Syntax and Usage Abstract vs Concrete Methods Constructors and Abstract Classes Interfaces: Deep Dive Syntax and...
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Polymorphism – Overriding and Dynamic Binding in Java

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Methods, Overloading, and Recursion in Java

Table of Contents Introduction to Methods in Java Declaring and Calling Methods Method Parameters and Return Types Method Overloading Recursion in Java Advantages and Use Cases of Recursion Stack Memory and...

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Strings in Java – String Class, Immutable Nature, StringBuilder and StringBuffer

Table of Contents Introduction to Strings in Java The String Class String Declaration and Initialization String Immutability Common String Methods String Comparison String Concatenation and Performance StringBuilder vs StringBuffer Real-world Use Cases Summary and...

Arrays in Java – Single & Multi-dimensional Arrays, Array Operations

Table of Contents What Are Arrays? Advantages of Using Arrays Declaring and Initializing Arrays Accessing and Modifying Elements Iterating Through Arrays Multi-dimensional Arrays Common Array Operations Arrays vs ArrayList Real-world Examples Summary and What’s...

Loops in Java – for, while, do-while, break and continue

Table of Contents Introduction to Loops The for Loop The while Loop The do-while Loop Loop Control Statements: break and continue Infinite Loops Nested Loops Real-World Examples Summary and What’s Next 1. Introduction to...

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Working with JSON in PHP

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Table of Contents Introduction to JSON Why Use JSON in PHP? Encoding Data to JSON json_encode() Decoding JSON Data json_decode() Handling JSON Errors Error Handling in JSON Functions Working with JSON Files in...

PHP Filters and Data Validation

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Table of Contents Introduction to Data Validation and Filtering Importance of Data Validation PHP Filter Functions filter_var() filter_input() filter_input_array() Common PHP Filters FILTER_SANITIZE_* FILTER_VALIDATE_* Validating and Sanitizing User Input Email Validation URL Validation Integer Validation Custom Validation and...

Cookies in PHP

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Table of Contents Introduction to Cookies Setting Cookies in PHP Retrieving Cookies in PHP Modifying and Unsetting Cookies Cookie Expiration and Lifetime Secure Cookies and HttpOnly Cookies Cookie Scope: Domain and...

Sessions in PHP

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Table of Contents Introduction to Sessions Starting a Session Storing Data in Sessions Retrieving Data from Sessions Modifying and Unsetting Session Variables Destroying a Session Session Security Best Practices Example: Creating a...

File Uploads and Image Handling

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Table of Contents Introduction to File Uploads Setting Up the HTML Form for File Upload PHP File Upload Handling Checking for File Upload Errors Validating File Types and Sizes Moving...

Form Validation and Sanitization

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Table of Contents What Is Form Validation? What Is Data Sanitization? Why Are Validation and Sanitization Important? Types of Form Validation Client-side Validation vs. Server-side Validation Validation Techniques in PHP Common...

Introduction to Prepared Statements in MySQLi

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Table of Contents What Are Prepared Statements? Why Use Prepared Statements? Security: Preventing SQL Injection Performance Benefits Understanding the Structure of Prepared Statements Steps Involved in Using Prepared Statements How to...

CRUD Operations (Create, Read, Update, Delete) in PHP with MySQLi

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Table of Contents What Are CRUD Operations? Setting Up the Database for CRUD Operations Creating Data in MySQL (Create) Inserting Data Using MySQLi Prepared Statements for Inserting Data Reading Data...

Connecting PHP with MySQL using MySQLi

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Table of Contents What is MySQLi? Why Use MySQLi for MySQL Connections? Setting Up MySQL and PHP for MySQLi Connecting to MySQL using MySQLi Using MySQLi Object-Oriented Method Using MySQLi...

Introduction to MySQL and Database Integration

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Table of Contents What is MySQL? Why Use MySQL with PHP? Setting Up MySQL and PHP Connecting PHP to MySQL Using mysqli Using PDO (PHP Data Objects) Basic MySQL Queries in...

Introduction to Debugging in PHP

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Table of Contents What is Debugging? Why Debugging is Important in PHP Common Debugging Techniques Using var_dump() Using print_r() Using echo and exit Using debug_backtrace() Debugging Tools and Extensions Xdebug Debugging with IDEs (PHPStorm,...

PHP Include & Require Statements

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Table of Contents Introduction to Include and Require Syntax of include Syntax of require Key Differences Between include and require Using include_once and require_once Best Practices for Using Include and...
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