What are potential issues with reading source code from external websites using fopen in PHP?

When reading source code from external websites using fopen in PHP, potential issues can arise due to security vulnerabilities such as allowing remote code execution or exposing sensitive information. To solve this issue, it is recommended to use cURL instead of fopen as it provides more control and security when fetching remote resources. 

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/source_code.php");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_close($ch);

echo $result;

Keywords

fopen PHP source code external websites security vulnerability

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