What potential issues can arise when trying to download images from external servers using PHP scripts?

One potential issue that can arise when trying to download images from external servers using PHP scripts is that the server hosting the images may block the requests due to security measures. To solve this, you can set the user agent header in your PHP script to mimic a browser request, which can help bypass some security checks. 

$url = 'https://example.com/image.jpg';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3');
$image_data = curl_exec($ch);
curl_close($ch);

file_put_contents('downloaded_image.jpg', $image_data);

Keywords

cURL file_get_contents fopen HTTP headers cross-origin restrictions

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