How can we automate the process of validating and sanitizing all POST values in PHP?

To automate the process of validating and sanitizing all POST values in PHP, we can create a function that loops through all POST values, validates them using filters or regular expressions, and sanitizes them using functions like htmlspecialchars() or htmlentities(). This function can be called at the beginning of the script to ensure all POST values are clean and safe to use. 

function validateAndSanitizePostValues() {
    foreach ($_POST as $key => $value) {
        // Validate and sanitize $value here
        $_POST[$key] = filter_var($value, FILTER_SANITIZE_STRING);
    }
}

validateAndSanitizePostValues();

Keywords

filter_input filter_var $_POST validation sanitization

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