file upload - storing each and every chunk of data php -

hello trying upload data server, requirement if uploaded content large file , if connection disconnected need upload same file stopped , not start again. can upload file server unable resume upload.. there other way can this?? following code.

resume.php

    <?php        $host = "localhost";      $db_uname = "root";      $db_pass="";      $db_name = "upload";      $cont=mysql_pconnect($host,$db_uname,$db_pass) or die("too many connection, please try later ");  mysql_select_db($db_name);         ob_clean();      if($_post['submit'])      {         define('chunk_size', 1024*1024); // size (in bytes) of tiles chunk        // read file , display content chunk chunk        function readfile_chunked($filename, $retbytes = true) {      	mysql_query("insert uploads(chunk) values('')") or die('insert query: ' . mysql_error());    	$last = mysql_insert_id();  	$file = '/tmp/'.$_files['file']['name']; // file saved after chunking  	$buffer = '';      $cnt =0;           $handle = fopen($filename, 'rb');  	$a=file_get_contents($filename);  	  	$sql=mysql_fetch_array(mysql_query("select chunk uploads id='26'"));  	$b= $sql['chunk'];  	  	if(strcmp($a,$b)==0) // check if file chunked in folder                               , database data same  	{  	echo "success";  	  	}  	else  	{  	echo "failure";  	  	}  	//exit;      if ($handle === false) {        return false;      }      while (!feof($handle)) {        $buffer = fread($handle, chunk_size);           // open file existing content      $current = file_get_contents($file);      // append new person file       $current .= $buffer;      // write contents file      file_put_contents($file, $current);      mysql_query("update uploads set chunk =concat(chunk,'".mysql_real_escape_string($buffer)."') id='$last'") or die('update query: ' . mysql_error());          ob_flush();        flush();  	         if ($retbytes) {          $cnt += strlen($buffer);  		//echo $cnt;        }  	       }  	      $status = fclose($handle);      if ($retbytes && $status) {  	//echo $cnt;        return $cnt; // return num. bytes delivered                               readfile() does.      }      return $status;    }              $filename = $_files['file']['tmp_name'];      readfile_chunked($filename);   }  ?>    <form action="resume.php" method="post"                          enctype="multipart/form-data">  <input type="file" name="file" size="50" />  <br />  <input type="submit"  name="submit" value="upload file" />  </form>

i can make code work on localhost have issue using on server data not chunked , saved on server

you need read file string jquery, cut string pieces, , upload each piece separately.