Import To mysql
 
$contents = file ('filename.csv');
for($i=0; $i<sizeof($contents); $i++)
{
$string = "remove value";
$no = str_replace($string, "/", $contents[$i]);
Print $no; 
$sql = mysql_query("insert into tablename (id) values ('$no')");
echo "<br>";
}
 
 
Export to CSV 
 
require 'exportcsv.inc.php';
 
$table="tablename"; // This is the tablename that you want to export to csv from mysql.
 
exportMysqlToCsv($table);
 
 
 
 
function exportMysqlToCsv($table,$filename = 'filename.CSV')
{
    $csv_terminated = "\n";
    $csv_separator = ",";
    $csv_enclosed = '"';
    $csv_escaped = "\\";
    $sql_query = "select * from $table";
 
    // Gets the data from the database
    $result = mysql_query($sql_query);
    $fields_cnt = mysql_num_fields($result);
 
 
    $schema_insert = '';
 
  /*  for ($i = 0; $i < $fields_cnt; $i++)
    {
        $l = $csv_enclosed . str_replace($csv_enclosed, $csv_escaped . $csv_enclosed, stripslashes(mysql_field_name($result, $i)));
        $schema_insert .= $l;
       $schema_insert .= $csv_separator;
    } */// end for
 
   // $out = trim(substr($schema_insert, 0, -1));
   // $out .= $csv_terminated;
 
    // Format the data
    while ($row = mysql_fetch_array($result))
    {
        $schema_insert = '';
        for ($j = 0; $j < $fields_cnt; $j++)
        {
            if ($row[$j] == '0' || $row[$j] != '')
            {
 
                if ($csv_enclosed == '')
                {
                    $schema_insert .= $row[$j];
                } else
                {
                    $schema_insert .= $csv_enclosed . 
					str_replace($csv_enclosed, $csv_escaped . $csv_enclosed, $row[$j]) . $csv_enclosed;
                }
            } else
            {
                $schema_insert .= '';
            }
 
            if ($j < $fields_cnt - 1)
            {
                $schema_insert .= $csv_separator;
            }
        } // end for
 
        $out .= $schema_insert;
        $out .= $csv_terminated;
    } // end while
 
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Content-Length: " . strlen($out));
    // Output to browser with appropriate mime type, you choose ;)
    header("Content-type: text/x-csv");
    //header("Content-type: text/csv");
    //header("Content-type: application/csv");
    header("Content-Disposition: attachment; filename=$filename");
 
		if($out)
		{
			echo $out;
			$table="table_csv";
			mysql_query("TRUNCATE $table");
		}
 
 
 
    exit;
 
 
 
}