在PHP中从sqlite3数据库中获取数据

Question

I need some help with my PHP. I have a trouble with fetching the data from the database. I have hired a PHP developer who did not do his job properly that he have messed up the code which make it don't work so I need some help to fix the issue to get it working again.

When I try this:

//open the database File
$db = new SQLite3('myChannel.db');

if(!$db) 
{
  echo $db->lastErrorMsg();
} 
else 
{
   $channel_name = $_GET['channels'];

   $sql ="SELECT channel, title, start_date, stop_date, description FROM programs WHERE channel='$channel_name'";

   $results = $db->query($sql);

   while ($row = $results->fetchArray()) 
   {
     print_r($row);
   }

What happen with the code is it will not fetching the matched data from the database as it will not do anything. I think there is something wrong with the $sql variable.

What I'm expecting to do is I want to look for data in the database where I use the variable called $channel_name , then I want to fetch the matched data to output them in my PHP.

Can you please help me how I can fetch the matched data in the database?

Answer 1

Try this code based on the SQLite PHP docs

class MyDB extends SQLite3 {
    function __construct() {
        $this->open('myChannel.db');
    }
}
$db = new MyDB();
if (!$db) {
    echo $db->lastErrorMsg();
} else {
    $channel_name = $_GET['channels'];
    $sql = "SELECT channel, title, start_date, stop_date, description FROM programs WHERE channel='{$channel_name}'";
    $results = $db->query($sql);
    while($row = $results->fetchArray(SQLITE3_ASSOC) ) {
        print_r($row);
    }
}

I changed a few things. I turned your database connection into a class, and I changed your while to include SQLITE3_ASSOC .

Warning: OP's code and as a result this answer has code that is vulnerable to SQL Injection!