PHPでURLから画像を保存

<?php
    // The image is from Unsplash, and we've uploaded
    // it to Imgur for this article.
    $image_url = 'https://i.imgur.com/NFyDQTj.jpeg';
    // Define the image location. Here, the location
    // is the saved_images folder.
    $image_location = 'saved_images/01_computer_image.png';
    // Use file_put_contents to grab the image from
    // the URL and place it into the image location
    // with its new name.
    if (file_put_contents($image_location, file_get_contents($image_url))) {
        echo "Image saved successfully";
    } else {
        echo "An error code, please check your code.";
    }
?>

<?php
    // Initiate a cURL request to the image, and
    // define its location.
    $curl_handler = curl_init('https://i.imgur.com/ZgpqSGm.jpeg');
    $image_location = 'saved_images/02_apples.png';
    // Open the file for writing in binary mode
    $open_image_in_binary = fopen($image_location, 'wb');
    // Define where cURL should save the image.
    curl_setopt($curl_handler, CURLOPT_FILE, $open_image_in_binary);
    curl_setopt($curl_handler, CURLOPT_HEADER, 0);
    // Lets you use this script when there is
    // redirect on the server.
    curl_setopt($curl_handler, CURLOPT_FOLLOWLOCATION, true);
    // Auto detect encoding for the response | identity
    // deflation and gzip
    curl_setopt($curl_handler, CURLOPT_ENCODING, '');
    // Execute the current cURL session.
    curl_exec($curl_handler);
    // Close the connection and
    curl_close($curl_handler);
    // Close the file pointer
    fclose($open_image_in_binary);

    // Confirm the  new image exists in the saved_images
    // folder.
    if (file_exists($image_location)) {
        echo "Image saved successfully";
    } else {
        echo "An error occurred. Please check your code";
    }
?>

<?php
    $image_url = 'https://i.imgur.com/CcicAAl.jpeg';
    $image_location = 'saved_images/03_robot.png';
    // Use the copy() function to copy the image from
    // its Imgur URL to a new file name in the
    // saved_images folder.
    $copy_image = copy($image_url, $image_location);
    // Confirm the  new image exists in the saved_images
    // folder.
    if (file_exists($image_location)) {
        echo "Image saved successfully";
    } else {
        echo "An error occurred. Please check your code";
    }
?>

<?php
    // Define a custom function to grab an image
    // from a URL using fopen and fread.
    function save_image_from_URL($source, $destination) {
        $image_source = fopen($source, "rb");
        $image_location = fopen($destination, "wb");

        while ($read_file = fread($image_source, 8192)) {
            fwrite($image_location, $read_file, 8192);
        }
        fclose($image_source);
        fclose($image_location);
    }
    // Set the image URL and its new destination on
    // your system
    $image_url = 'https://i.imgur.com/XGSex5B.jpeg';
    $image_location = 'saved_images/04_Mac.png';
    // Save the image to its new destination
    $save_image = save_image_from_URL($image_url, $image_location);
    // Confirm the  new image exists in the saved_images
    // folder.
    if (file_exists($image_location)) {
        echo "Image saved successfully";
    } else {
        echo "An error occurred. Please check your code";
    }
?>

<?php
    // Set the image URL and its new location
    $image_url = 'https://i.imgur.com/PpJnfpL.jpeg';
    $image_location = 'saved_images/05_Application_UI.png';

    // Fetch all headers from the URL
    $image_headers = get_headers($image_url);

    // Check if content encoding is set
    $content_encoding = isset($image_headers['Content-Encoding']) ? $image_headers['Content-Encoding'] : null;

    // Set gzip decode flag
    $gzip_decode = ($content_encoding === 'gzip') ? true : false;

    // If the image is gzipped, decode it before
    // placing it in its folder.
    if ($gzip_decode) {
        file_put_contents($image_location, gzdecode(file_get_contents($image_url)));
    } else {
        copy($image_url, $image_location);
    }
    // Confirm the  new image exists in the saved_images
    // folder.
    if (file_exists($image_location)) {
        echo "Image saved successfully";
    } else {
        echo "An error occurred. Please check your code";
    }
?>