PHP : write binary string to file -

i had encoded image binary ($binaryimage) in string. want save in file in server.here code, got result: fwrite() expects parameter 1 resource, boolean given... . code wrong?

            $binary=base64_decode($binaryimage);             header('content-type: bitmap; charset=utf-8');              $file = fopen('../uploadedimages/'.$filename, 'wb');             // create file             fwrite($file, $binary);             fclose($file); 

(edit) tried :

            if($file===false){                 echo "failed file";             }                         // create file             if(fwrite($file, $binary)===false){                 echo "failed write";             } 

get message:

fopen(../uploadedimages/fb_img_1437004428570.jpg): failed open stream: no such file or directory in <b>/home/u505221043/public_html/welcom/include/db_functions.php 

my php code in "include" directory. , "uploadedimage" 777 mode.

->include    ->function.php ->uploadedimages 

file() returns boolean when fails open file.

this several reasons such incorrect path or permissions.

i recommend adding guard clause, @ least debug issues:

$file = fopen('../uploadedimages/' . $filename, 'wb'); if ($file === false) {     exit("failed file"); }