PHP - download dialog box for given videos url - php

Question

I am pretty new in php .so hopefully this all make sense . I am using below script to extract url from database.I want down-loader will popup in browser while reading the url from database....
$q=" Select url from videos where id = '".$_REQUEST['id']."' ";
$result=mysql_query($q);
while( $rows =mysql_fetch_assoc($result) )
{
$url=$rows['url '];
//here i want code to send this url to down-loader of browser..
//and browser should popup the down-loader
$myarray1=array("url "=>$url );
}
I have searched codes on google but i don't understand how to use for this scenario...

Answer 1

First of all, you need to fix the SQL Injection problem.
Use MySQLi instead of MySQL
Here's a code:
$request_id = isset($_REQUEST['id']) ? $_REQUEST['id'] : '';
if(!empty($request_id)){
$mysqli = new mysqli("localhost", "user", "password", "database_name");
$request_id = $mysqli->real_escape_string($request_id);
$query = "SELECT url FROM videos WHERE id='" . $request_id . "'";
$query_result = $mysqli->query($query);
if(!empty($query_result)){
if($query_result->num_rows > 0){
$my_result_array = array();
while($row = $query_result->fetch_assoc()){
$my_result_array[] = $row['url'];
}
}
}
mysqli_close($mysqli);
}
Concerning the download problem, you need to redirect the user to a PHP page with a specific header
<?php
$file_name = "";
header("Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
header("Content-Disposition: attachment;filename=\"" . $file_name . "\"");
header("Cache-Control: max-age=0");
?>
You need to add the $file_name and the specific Content-Type.
Here's a list of Content-Types: http://davidwalsh.name/php-header-mime
In order to redirect a user to the download page, you can use the PHP header() function.