html5 - Dark image get while saving a png through PHP -


i trying save captured image html5/canvas mobile. using php (symfony2). followed instructions post (how save png image server-side, base64 data source) dark empty image saved instead of captured.

here javascript post code:

var dataurl = canvas.todataurl(); $.ajax({     type: "post",     url: "{{ path("personne_photo_capture",{"id":entity.personne.id}) }}",     data: {         imgbase64: dataurl     } }).done(function (msg) {     $('#msg').html(msg);   }).fail(function (xhr, textstatus, errorthrown) {     $('#msg').html(xhr.responsetext); });

and php saving code :

$rawdata = $_post['imgbase64']; if (isset($rawdata)) {     $filtereddata = explode('base64,', $rawdata);     $data = base64_decode($filtereddata[1]);       $filename = "profil.png";      file_put_contents('picts/small/' . $filename, $data); }

first of all, make sure specify datatype on cliente side 

 datatype: 'text',

on server side replace first 2 statements :

$data = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data));

for further pointers take loop @ asked question

how save png image server-side, base64 data string


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