Below you will find pages that utilize the taxonomy term “regex”
September 2, 2017
PHP Regex tutorial
Have you ever wondered how web applications do validation on forms? How does the app know when your input is really an email address? In most PHP applications, this is done using regular expressions (Regex). I’ve previously posted about how to defend against XSS and SQL injection. Checking strings with a white list of allowed characters is one of the easiest changes a developer can make. Regex makes this easy in most programming languages.