php - getimagesize on application/octet-stream upload? -

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i using mithril.js drag n drop, using formdata, sends end unable use getimagesize() on it. why need getimagesize because of library i'm using.

//var_dump on $_files array (size=1)     'upload' =>          array (size=5)             'name' => string '95ab94cadab44e81cfe6d3c83642680d.jpg' (length=36)             'type' => string 'image/jpeg' (length=10)             'tmp_name' => string '/tmp/phptj3ix3' (length=14)             'error' => int 0             'size' => int 743265

and heres var_dump on getimagesize($_files['upload']['tmp_name']);

 boolean false

i've tried thinking uploading string:

$data = file_get_contents($_files['upload']['tmp_name']); $image = imagecreatefromstring($data); //the error imagecreatefromstring(): data not in recognized format

also tried var_dumping tmp file out

$data = file_get_contents($_files['upload']['tmp_name']); var_dump($data); //�����jfif��������8photoshop 3.0 ...

edit: size of file 392kb php says 743kb , unsure why

$binary_data = file_get_contents($_files['upload']['tmp_name']); $uri = 'data://application/octet-stream;base64,'  . base64_encode($binary_data); $arr =  getimagesize($uri);

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