How Can I Download and Save Files from URLs Using cURL in PHP?

Saving Files from URLs Using cURL in PHP

Saving files from remote URLs can be a common task for web developers. In PHP, cURL provides a convenient way to download files from the internet and save them locally.

Here's a code snippet that addresses the original problem of saving an image file from a URL:

function grab_image(string $url, string $saveTo): void {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
    $raw = curl_exec($ch);
    curl_close($ch);

    if (file_exists($saveTo)) {
        unlink($saveTo);
    }
    $fp = fopen($saveTo, 'x');
    fwrite($fp, $raw);
    fclose($fp);
}

To use this function, simply pass in the URL of the file you want to download and the path where you want to save it. For example:

$remoteImageUrl = 'https://example.com/image.jpg';
$localSavePath = 'path/to/local/folder/image.jpg';
grab_image($remoteImageUrl, $localSavePath);

This will download the image from the remote URL and save it to the specified local path.

Note: Ensure that the allow_url_fopen directive is enabled in your PHP configuration (php.ini) for this code to work properly.

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