Prepared Statements

PHP PDO Database Access Cheat Sheet

Covers connecting with PDO, writing prepared statements, handling transactions, and key fetch and error mode configuration options.

How Do Prepared Statements Improve Database Performance?

A prepared statement is parsed, validated, and compiled into an execution plan once, and then executed repeatedly with different parameter values, so the datab…

What Are Parameterized Queries and Why Do They Matter?

A parameterized query is a SQL statement written with placeholders in place of literal values, where the actual values are supplied separately and bound by the…

What Is SQL Injection and How Do You Prevent It?

SQL injection is a vulnerability where an attacker supplies crafted input that gets concatenated directly into a SQL query string, causing the database to exec…