Php base64 string to image

Question

I get base64 string from my android appliation using which the php script saves it to the directory everything works fine for png. except i need the script to work for all image types At android side i have httpservlet extended class and using which i send a get request with a variable containing base64 string. So all we have is a base64 string nothing else at server side Can you help me with that?? This is my php code

<?php

 $imgstr = $_REQUEST['string'];


      // Decode the data
$data = base64_decode($imgstr);

$im = imagecreatefromstring($data);
if ($im !== false) {
header('Content-Type: image/png');
imagepng($im);

$success = file_put_contents("img/abc". uniqid().".png", $data);
imagedestroy($im);
if ($success) {
    echo 'yes yes yes';
}
} else {
echo 'An error occurred.';

} ?>

Did you check to see if it's sending a $_file from the submission form? — a coder
– a coder, Commented Jul 5, 2014 at 18:29
There is no submission form i am sending through android using httprequest. just one variable string of bas64 — user2800040
– user2800040, Commented Jul 5, 2014 at 18:51
How do you pass data, when it's not being passed through a type of form? Is an applet that passes data to your PHP server still not a type of form? — a coder
– a coder, Commented Jul 5, 2014 at 19:29
At android side i have httpservlet extended class and using which i send a get request with a variable containing base64 string. So all we have is a base64 string nothing else at server side — user2800040
– user2800040, Commented Jul 6, 2014 at 6:41

user2800040 · Accepted Answer · 2014-07-11 03:13:23Z

1

Ok so what i did was that i just calculated the mime type before encoding to base64 and sent that as a variable too

This is how i did it

 public static String getMimeType(String url) {
    String type = null;
    String extension = MimeTypeMap.getFileExtensionFromUrl(url);
    if (extension != null) {
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extension);
    }
    return type;
}   

   mimetype = getMimeType(picturePath);
   String temp[] = mimetype.split("/");
   as.add(new BasicNameValuePair("mime", temp[1]));

After this as was sent to server along with image.

answered Jul 11, 2014 at 3:13

user2800040

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1 Comment

a coder Over a year ago

So you researched it on your own. I thought it would be sent to the server as a $_FILE, but I guess not.

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