In PHP, how do I filter strings for production systems?

Keywords: PHP, String Filtering, Production Systems, Input Validation, Security
Description: This guide covers the importance of filtering strings in PHP for production systems, focusing on input validation and security best practices to prevent vulnerabilities.
<?php // Function to sanitize input function sanitizeString($string) { // Strip tags from the input string $string = strip_tags($string); // Escape special characters $string = htmlspecialchars($string, ENT_QUOTES, 'UTF-8'); // Trim whitespace $string = trim($string); return $string; } // Example usage $userInput = "<script>alert('XSS')</script> Hello World!"; $safeInput = sanitizeString($userInput); echo $safeInput; // Outputs: Hello World! ?>

Keywords: PHP String Filtering Production Systems Input Validation Security

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