How can PHP be used to prevent POST-Injection in form submissions?

POST-Injection can be prevented in form submissions by using PHP's built-in functions like htmlspecialchars() or htmlentities() to sanitize user input before processing it. These functions will convert special characters into their HTML entities, preventing any malicious code from being executed. 

// Sanitize user input to prevent POST-Injection
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = htmlspecialchars($_POST["username"]);
    $password = htmlspecialchars($_POST["password"]);
    
    // Process the sanitized input here
}

Keywords

PHP POST-Injection form submissions security validation

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