What potential issues can arise when using cURL in PHP to make API calls to external servers?

One potential issue that can arise when using cURL in PHP to make API calls to external servers is the lack of proper error handling. If an API call fails, the script may continue running without notifying the user or logging the error. To solve this issue, you should implement error handling to catch any cURL errors and handle them appropriately.

// Initialize cURL session
$ch = curl_init();

// Set cURL options
curl_setopt($ch, CURLOPT_URL, 'https://api.example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Execute cURL request
$response = curl_exec($ch);

// Check for cURL errors
if(curl_errno($ch)) {
    echo 'cURL error: ' . curl_error($ch);
}

// Close cURL session
curl_close($ch);