MySQL查询未显示为LEFT JOIN和多个AND子句

Question

I added the line AND t.cover='$c' and now it will not show any results. However, all variables are correct. If I run the line in phpMyAdmin it will display the results fine. Am I missing syntax in PHP? If I remove the t.cover='$c' the script works fine on the web. $c is simply a $_GET['c'] that will either be empty or will equal 0, which I redefine to 'No'.

if($t != '') {
    if($c == 'No') {
         $getListings = mysql_query("SELECT * FROM events t LEFT JOIN bars b on t.venue=b.name WHERE t.date='$date' AND t.type='$t' AND t.cover='$c' AND b.active='1' ORDER BY t.promoted DESC, t.order ASC");
    } else {
         $getListings = mysql_query("SELECT * FROM events t LEFT JOIN bars b on t.venue=b.name WHERE t.date='$date' AND t.type='$t' AND b.active='1' ORDER BY t.promoted DESC, t.order ASC");
    }
} else {
     if($c == 'No') {
          $getListings = mysql_query("SELECT * FROM events t LEFT JOIN bars b on t.venue=b.name WHERE t.date='$date' AND t.cover='$c' AND t.type='$t' AND b.active='1' ORDER BY t.promoted DESC, t.order ASC");
     } else {
          $getListings = mysql_query("SELECT * FROM events t LEFT JOIN bars b on t.venue=b.name WHERE t.date='$date' AND b.active='1' ORDER BY t.promoted DESC, t.order ASC");
     }
}

My biggest confusion is why it works in phpMyAdmin but yet displays no rows on the web.

It seems I have tried everything on Google and still no luck. I wish it would throw an error or something to point me in a direction, but it just comes up as though the query was empty. If anyone has any idea, I am still looking for input. Maybe LEFT JOIN is doing it?

Answer 1

... LEFT JOIN bars b on t.venue=b.name AND b.active=1 ...
Remove the b.active from the WHERE otherwise it will be a condition for the SELECT

The current queries have SELECT... WHERE ... b.active = 1 ... meaning it can only return results where that condition is met