image_lowquality_and_low_size.php

<?php

function create_image($img_url, $width, $height, $quality)
{
    function resize_image($new_width, $new_height, $image, $old_width, $old_height)
    {
        $new_image = imagecreatetruecolor($new_width, $new_height);
        imagecopyresampled($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $old_width, $old_height);
        return $new_image;
    }

    $imageTypeArray = array
        (
        0 => 'UNKNOWN',
        1 => 'GIF',
        2 => 'JPEG', /* and JPG */
        3 => 'PNG',
        4 => 'SWF',
        5 => 'PSD',
        6 => 'BMP',
        7 => 'TIFF_II',
        8 => 'TIFF_MM',
        9 => 'JPC',
        10 => 'JP2',
        11 => 'JPX',
        12 => 'JB2',
        13 => 'SWC',
        14 => 'IFF',
        15 => 'WBMP',
        16 => 'XBM',
        17 => 'ICO',
        18 => 'COUNT',
    );

    $filename = file_get_contents($img_url);
    $image = imagecreatefromstring($filename);

    list($old_width, $old_height, $type) = getimagesize($img_url);
    $new_image = resize_image($width, $height, $image, $old_width, $old_height);

    ob_start();

    // Output the image

    switch ($imageTypeArray[$type]) {
        case "UNKNOWN":
            //
            break;

        case "JPEG":
            imagejpeg($new_image, null, $quality);
            break;

        case "PNG":
            imagepng($new_image, null, 9);
            break;
    }

    $img = ob_get_clean();
    ob_end_clean();

    $base64 = base64_encode($img);

    imagedestroy($image);
    imagedestroy($new_image);

    return ('data: image' . ';base64,' . $base64);
}

echo "<img src='" . create_image("https://images.pexels.com/photos/326055/pexels-photo-326055.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940", 480, 320, 50) . "' />";