Lack of Input Validation
- Mistake: Absence of input validation exposes applications to data manipulation and injection attacks.
// Mistaken code
$email = $_POST['email'];
- Correction: Validate input data types, lengths, and formats using functions like filter_var() or regular expressions.
Syntax:
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
// Invalid email format
}
Common Mistakes to Avoid in PHP
PHP is a widely used server-side scripting language for web development. However, developers often overlook best practices, leading to vulnerabilities and inefficiencies. This article delves into common PHP mistakes and offers comprehensive solutions.
Table of Content
- Not Using Prepared Statements
- Ignoring Error Handling
- Poor Password Security
- Lack of Input Validation
- Mixing PHP and HTML