How to get image size from base 64 string in php

Question

I am getting the base 64 for string for image I have to move in folder and store the image path in database but I have to limit the file size.How can I do this:

My code for generate image from base 64 string is like:

/** if image is attached with request **/
 $Image = "MyBase64StringHere";
 list($type, $Image) = explode(';', $Image);
 list(, $Image)      = explode(',', $Image);

/** decode the base 64 image **/
 $Image = base64_decode($Image);

I have tried to get image size like:
$size =  getimagesize($Image);

But from this am getting file width and height.Can someone tell me how can I get file size from this.Thanks

Answer 1

The getimagesize() function should just work with Data URI as well:

$Image = "MyBase64StringHere";
$size = getimagesize($Image);

Answer 2

Since that the base-64 algorithm increases the image size up to 33%, i strongly recommend you to use this way:

$size = (int)(strlen(rtrim($image, '=')) * 0.75); // in byte