note 94898 added to function.fseek

This example demonstrates, how fseek can be used to determine the dimension (size) of an mp4-video-file: <?php $fh; # filehandle if(($fh = fopen($filename, "rb")) === FALSE) { die("unable to open file '$filename'!"); } # seek headerposition, where sizeX is... fseek($fh, 0xE8); $sizeX = fread($fh, 2); # read two bytes (the width) # seek headerposition, where sizeY is... fseek($fh, 0xEC); $sizeY = fread($fh, 2); # read two bytes (the height) fclose($fh); echo "sizeX: ".hexdec(bin2hex($sizeX))."<br/>"; echo "sizeX: ".hexdec(bin2hex($sizeY))."<br/>"; ?> ---- Server IP: 69.147.83.197 Probable Submitter: 212.100.46.73 ---- Manual Page -- http://www.php.net/manual/en/function.fseek.php Edit -- https://master.php.net/note/edit/94898 Del: integrated -- https://master.php.net/note/delete/94898/integrated Del: useless -- https://master.php.net/note/delete/94898/useless Del: bad code -- https://master.php.net/note/delete/94898/bad+code Del: spam -- https://master.php.net/note/delete/94898/spam Del: non-english -- https://master.php.net/note/delete/94898/non-english Del: in docs -- https://master.php.net/note/delete/94898/in+docs Del: other reasons-- https://master.php.net/note/delete/94898 Reject -- https://master.php.net/note/reject/94898 Search -- https://master.php.net/manage/user-notes.php