What are the security implications of including external PHP code in a webpage?

Including external PHP code in a webpage can pose security risks such as injection attacks, cross-site scripting (XSS), and remote code execution. To mitigate these risks, it is important to carefully review and sanitize the external PHP code before including it in the webpage. This can involve validating input, escaping output, and using secure coding practices. 

// Example code snippet to include external PHP code securely
$externalCode = file_get_contents('external_code.php');
$externalCode = htmlspecialchars($externalCode, ENT_QUOTES, 'UTF-8');
echo $externalCode;

Keywords

security implications external PHP code webpage code injection cross-site scripting

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