What are some common pitfalls when using sprintf in PHP?

One common pitfall when using sprintf in PHP is not properly escaping special characters within the format string, which can lead to unexpected results or vulnerabilities like SQL injection. To solve this issue, always use the %s placeholder for dynamic values and escape any user input using functions like htmlspecialchars or addslashes before passing them to sprintf.

// Example of using sprintf with proper escaping
$name = "John";
$escapedName = addslashes($name);
$formattedString = sprintf("Hello, %s", $escapedName);
echo $formattedString;