how to detect if a binary image exist in src with php?

Question

there I have some img tags ..I want read content of their src.

in some src I have binery code instead normal src like this:

 data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAA0JCgsKCA0LCgsODg0PEyAVExISEyccHhcgLikxMC4pLSwzOko+MzZGNywtQFdBRkxOUlNSMj5aYVpQYEpRUk//2wBDAQ4ODhMREyYVFSZPNS01T09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0//wAARCAIRA6wDASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL...

Is there any way I detect if it is binary image?

I try this:

$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime = finfo_file($finfo, $fileDIR);
finfo_close($finfo);

but it return image/jpeg ...

ahuemmer · Accepted Answer · 2015-06-05 15:41:48Z

1

If I got your problem right, you want to be able to distinguish between something like

<img src="path/to/myimage.jpg" />

and

<img src="data:image/jpeg;base64,/9j/4A..." />

when analysing a HTML file using PHP, is this correct?

If so, you could look at the contents of the src attribute of the img and find out whether it starts with "data:". If (and only if) this is the case, you can assume that a binary image follows, see details here.

So, if you stumble upon a data: at the beginning of the src content, you can get the image by parsing the rest of it (possible regarding the base64 encoding and/or charset given, see here again). Else, you can access the image "normally" by the link in the src.

answered Jun 5, 2015 at 15:41

ahuemmer

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