The `addcslashes()` string function in PHP 8.4 adds backslashes before specified characters in a string, formatting them in a C-style representation. This is particularly useful for escaping characters that have special meanings in contexts like C programming or for preparing strings for certain outputs.Syntax:

<?phpaddcslashes(string $string, string $characters): string?>

`$string`: The input string.`$characters`: A list of characters to be escaped.Examples:

Escaping Specific Characters:

<?php$string = "Hello, World!";// Escape the character 'W'$escapedString = addcslashes($string, 'W');echo $escapedString; // Output: Hello, \World!?>

In this example, the character 'W' is escaped with a backslash.