note 95529 added to function.fopen

I am trying to write at opened file Inside other codes or texts.. $fp = fopen ($loc, "w+"); if (is_writable($loc)){ fwrite ($fp,$updateduser); fclose ($fp); BUT THE above code writes below of all texts. And I want to update different parts of that file inside the other texts or codes .. I also used the below code to get content of a file but the problem comes that I am unable to get Perfect values from diiferent areas after wrinting in it ...... $file=file_get_contents($loc); $data=explode("<!--data-->", $file); $print=array_slice($data, 1); But I am not perfectly succesful to UPDATE contents of diiffrent parts of a file.. So Please will anyone help me .... ?? Please Reply at sumansjournal@rediffmail.com . Thank you. ---- Server IP: 69.147.83.197 Probable Submitter: 124.124.161.216 ---- Manual Page -- http://www.php.net/manual/en/function.fopen.php Edit -- https://master.php.net/note/edit/95529 Del: integrated -- https://master.php.net/note/delete/95529/integrated Del: useless -- https://master.php.net/note/delete/95529/useless Del: bad code -- https://master.php.net/note/delete/95529/bad+code Del: spam -- https://master.php.net/note/delete/95529/spam Del: non-english -- https://master.php.net/note/delete/95529/non-english Del: in docs -- https://master.php.net/note/delete/95529/in+docs Del: other reasons-- https://master.php.net/note/delete/95529 Reject -- https://master.php.net/note/reject/95529 Search -- https://master.php.net/manage/user-notes.php