What is the function of the PHP htmlspecialchars functi…

The purpose of the htmlspecialchars function is to convert special characters into HTML entities to prevent malicious code input by users from being executed and causing security vulnerabilities. Special characters include special characters of HTML tags (such as <, >), double quotes, single quotes, the & symbol, and so on. The converted entities will be displayed correctly by the browser, without being interpreted as HTML tags or other special characters. This effectively prevents security issues such as cross-site scripting (XSS) attacks.