PHP base64 图片（备忘）

$image_file = './164175_100.jpg';
$image_info = getimagesize($image_file);
$base64_image_content = "data:{$image_info['mime']};base64," . chunk_split(base64_encode(file_get_contents($image_file)));

//然后保存

$upfile = $_POST['upfile'];//编码后的图片
if (preg_match('/^(data:s*image/(w+);base64,)/', $upfile, $result)){
  $type = $result[2];
  $filename = TIME.'.'.$type;
  $new_file = ROOT.'temp';//保存的路径
  if (!file_put_contents($new_file, base64_decode(str_replace($result[1], '', $upfile)))){
     return array('Error'=>1,'Msg'=>'上传图片失败。');
  }
}