How Export Excel file after protecting column using php

Question

Is it possible to protect few columns of excel file while exporting them, so user cannot make any changes in those columns accidentally.

Here the code by which I am exporting my excel file. I need to protect column 1,2,and 4 to be protected. Need guidance -

require_once('dbconfig.php');
$DB_TBLName = "admission";
$filename = "excelfilename";         //File Name
/*******YOU DO NOT NEED TO EDIT ANYTHING BELOW THIS LINE*******/
//create MySQL connection
//$sql = "Select * from $DB_TBLName where branch_id = '$branch' AND addmission_date between '$date1' AND '$date2'";
$sql = "select * from admission where $search branch_id = '$branch'";

//echo $sql;


//execute query
$result = mysql_query($sql) or die("Couldn't execute query:<br>" . mysql_error(). "<br>" . mysql_errno());
$file_ending = "csv";
//header info for browser
header("Content-Type: application/xls");
header("Content-Disposition: attachment; filename=$filename.xls");
header("Pragma: no-cache");
header("Expires: 0");
/*******Start of Formatting for Excel*******/
//define separator (defines columns in excel & tabs in word)
$sep = "\t"; //tabbed character
//start of printing column names as names of MySQL fields
for ($i = 0; $i < mysql_num_fields($result); $i++) {
echo mysql_field_name($result,$i) . "\t";
}
print("\n");
//end of printing column names
//start while loop to get data
    while($row = mysql_fetch_row($result))
    {
        $schema_insert = "";
        for($j=0; $j<mysql_num_fields($result);$j++)
        {
            if(!isset($row[$j]))
                $schema_insert .= "NULL".$sep;
            elseif ($row[$j] != "")
                $schema_insert .= "$row[$j]".$sep;
            else
                $schema_insert .= "".$sep;
        }
        $schema_insert = str_replace($sep."$", "", $schema_insert);
 $schema_insert = preg_replace("/\r\n|\n\r|\n|\r/", " ", $schema_insert);
        $schema_insert .= "\t";
        print(trim($schema_insert));
        print "\n";
    }
?>

Thank you every body in advance and waiting for suggestions and reply

Answer 1

This is not an Excel file, but a CSV file. You are naming it " .XLS " and for the sake of Microsofts almighty it does what you expect.

But in a CSV file you can't have an further statements to what excel should do with columns. You need a more intelligent conversion to a pure Excel file like in PHPExcel .