CC-1927: Remove PEAR DB

-various fixes

airtime_mvc/application/models/Preference.php

@@ -87,7 +87,7 @@ class Application_Model_Preference
 	        }
 
             $result = $con->query($sql)->fetchColumn(0);
-            return $result ? $result : "";
+            return ($result !== false) ? $result : "";
         }
     }
 

airtime_mvc/application/models/Show.php

@@ -459,7 +459,7 @@ class Application_Model_Show {
             ." ORDER BY last_show DESC";
 
         $query = $con->query($sql)->fetchColumn(0);
-        return $query ? $query : "";
+        return ($query !== false) ? $query : "";
     }
 
     /**

airtime_mvc/application/models/ShowInstance.php

@@ -665,7 +665,7 @@ class Application_Model_ShowInstance {
 			."LIMIT 1";
 
 		$query = $con->query($sql)->fetchColumn(0);
-		return $query ? $query : NULL;
+        return ($query !== false) ? $query : NULL;
 	}
 
     public function getShowEndGapTime(){

airtime_mvc/application/models/StreamSetting.php

@@ -44,7 +44,7 @@ class Application_Model_StreamSetting {
                 ." WHERE keyname = '$key'";
 
             $result = $con->query($sql)->fetchColumn(0);
-            return $result ? $result : NULL;
+            return ($result !== false) ? $result : NULL;
         }
     }
 
@@ -231,7 +231,7 @@ class Application_Model_StreamSetting {
             ." WHERE keyname = '$keyname'";
         $result = $con->query($sql)->fetchColumn(0);
 
-        return $result ? $result : NULL;
+        return ($result !== false) ? $result : NULL;
     }
 
     public static function getStreamEnabled($stream_id)

airtime_mvc/application/models/Subjects.php

@@ -90,7 +90,7 @@ class Application_Model_Subjects {
         $sql = "SELECT id FROM ".$CC_CONFIG['subjTable']
             ." WHERE login='$login'";
         $query = $con->query($sql)->fetchColumn(0);
-        return $query ? $query : NULL;
+        return ($query !== false) ? $query : NULL;
     }
 
 
@@ -140,7 +140,7 @@ class Application_Model_Subjects {
         $con = Propel::getConnection();
         $sql = "SELECT login_attempts FROM ".$CC_CONFIG['subjTable']." WHERE login='$login'";
         $res = $con->query($sql)->fetchColumn(0);
-        return $res ? $res : 0;
+        return ($res !== false) ? $res : 0;
     }
 
 } // class Subjects

airtime_mvc/application/models/User.php

@@ -238,7 +238,7 @@ class Application_Model_User {
         }
 
         $query = $con->query($sql)->fetchColumn(0);
-        return $query ? $query : NULL;
+        return ($query !== false) ? $query : NULL;
     }
 
     public static function getHosts($search=NULL) {