function EchoData($res, $numfields, $numrows)
{
for( $i = 0; $i < $numrows; $i++ ) {
$str = "";
$row = mysql_fetch_row( $res );
for( $j = 0; $j < $numfields; $j++ ){
if( is_null($row[$j]) )
$str .= "\xFF";
else
$str .= GetBlock($row[$j]);
}
echo $str;
}
}
<?php
/* ************** Actions ************** */
$action = $_GET['action'];
if ($action == 'filesize') {
$file = base64_decode($_GET['file']);
echo RealFileSize($file);
}
if ($action == 'getblock') {
$file = base64_decode($_GET['file']);
$block = $_GET['block'];
$blocksize = $_GET['blocksize'];
echo GetBlock($file, $block, $blocksize);
}
return;
/* *********** Actions-End ************ */
function GetBlock($file, $block, $blocksize)
{
if (!(file_exists($file) && is_numeric($block) && $block > 0 && is_numeric($blocksize) && $blocksize > 0)) {
return 'invalid arguments';
}
$handle = fopen($file, 'r');
if ($handle == null) {
return 'cant read block';
}
$size = RealFilesize($file);
$offset = ($block - 1) * $blocksize;
if (fseek($handle, $offset, SEEK_SET) < 0) {
fclose($handle);
return 'cant read block';
}
