Search results for: "character filtering"

What are the potential pitfalls of using numbered columns in a database table for filtering in PHP?

Using numbered columns in a database table for filtering in PHP can be problematic because it makes the code less readable and harder to maintain. It...

How can functions be properly defined and used when filtering arrays in PHP?

When filtering arrays in PHP, functions can be properly defined and used by creating a custom callback function that defines the filtering criteria. T...

What are the best practices for filtering and validating user input in PHP?

Filtering and validating user input in PHP is crucial to prevent security vulnerabilities such as SQL injection, cross-site scripting (XSS), and other...

What are the potential pitfalls of using timestamps for date filtering in PHP?

One potential pitfall of using timestamps for date filtering in PHP is that timestamps are timezone-dependent, so if your server's timezone changes or...

Is using strip_tags function sufficient for filtering out dangerous content in PHP applications, or are there better alternatives?

Using `strip_tags` function alone is not sufficient for filtering out dangerous content in PHP applications, as it only removes HTML tags. To ensure b...