What potential issues can arise when using fopen in PHP to open external URLs?

When using fopen in PHP to open external URLs, potential issues can arise due to security risks and server configurations. To solve this, you can use the cURL library in PHP, which provides more options for handling external URLs securely. 

// Using cURL to open external URLs securely
$url = 'http://example.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);

// Output the response
echo $output;

Keywords

fopen PHP external URLs security error handling

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