php urlͼתbase64±àÂë

/**
 * ÍøÂçͼתbase64±àÂë
 * @param img ͼƬÍøÖ·
 **/
public function imgToBase64($img = '')
{
    if (!$img) {
        return false;
    }
    $imageInfo = getimagesize($img);
    $base64 = "" . chunk_split(base64_encode(file_get_contents($img)));
    return 'data:' . $imageInfo['mime'] . ';base64,' . chunk_split(base64_encode(file_get_contents($img)));
}