Can including a file with Unicode encoding in PHP cause any security vulnerabilities?

Including a file with Unicode encoding in PHP can potentially lead to security vulnerabilities if the file contains malicious code. To mitigate this risk, it is important to properly validate and sanitize any included files to ensure they do not contain harmful content. Additionally, using proper file permissions and restricting access to sensitive files can help prevent unauthorized access. 

// Example of including a file with Unicode encoding safely
$includedFile = 'safe_file.php'; // File to include

// Validate and sanitize the file name before including
if (preg_match('/^[a-zA-Z0-9_\-\.]+\.php$/', $includedFile)) {
    include $includedFile;
} else {
    echo 'Invalid file name';
}

Keywords

PHP file inclusion Unicode encoding security vulnerabilities code injection

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