How Can I Download Images from a URL using PHP and Curl?

Downloading Image Files via URL Using PHP and Curl

Saving image files from a remote URL to your server is a common task for web developers. This can be achieved seamlessly using PHP's Curl extension.

The Problem:

A developer has encountered difficulties saving an image file from a URL using Curl. The code provided does not seem to produce the desired result.

The Solution:

Here's a modified version of the code that should resolve the issue:

function grab_image($url, $saveto) {
    $ch = curl_init($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);
}

Key Changes:

• The function is renamed to grab_image for clarity.
• CURLOPT_HEADER is set to 0 to only retrieve the image data.
• CURLOPT_BINARYTRANSFER is set to 1 to ensure the image is saved as binary data.
• The save file path is provided as the second argument to allow flexible naming.

Additional Tip:

In your PHP configuration file (php.ini), ensure that allow_url_fopen is enabled. This setting allows PHP to open files via URLs.

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