How can the $_SERVER['PHP_SELF'] variable be properly integrated into a form action attribute in PHP?

The $_SERVER['PHP_SELF'] variable can be properly integrated into a form action attribute in PHP by using htmlspecialchars() function to sanitize the variable and prevent cross-site scripting attacks. This ensures that the form submits to the current page without any security vulnerabilities. 

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
    <!-- Form fields go here -->
</form>

Keywords

$_SERVER['PHP_SELF'] form action attribute integration PHP security

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