Tag: PHP

Table of Contents What is Object-Oriented Programming (OOP)? Why Use OOP in PHP? Key Concepts of OOP Classes and Objects Properties and Methods Constructor and Destructor Inheritance Encapsulation Polymorphism Abstraction Benefits of Using OOP in...

Table of Contents Introduction to Regular Expressions Why Use Regular Expressions in PHP? Basic Syntax of Regular Expressions PHP Functions for Regular Expressions preg_match() preg_match_all() preg_replace() preg_split() Special Characters in Regular Expressions Modifiers in...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...