Fix return values for `mysql_fetch_*` functions

The methods `mysql_fetch_* and `mysqli_fetch_*` have different return values, if there is no [more] results to fetch. Therefore the **null** return value of `mysqli` needs to be matched to the **false** return value of `mysql`.

Thanks to @muhammedalialat

1 files changed, 5 insertions, 8 deletions

diff --git a/lib/mysql.php b/lib/mysql.php
index 91d8a29..03bd7e3 100644
--- a/lib/mysql.php
+++ b/lib/mysql.php
@@ -284,7 +284,7 @@ namespace {
                 return false;
                 // @codeCoverageIgnoreEnd
             }
-            return mysqli_fetch_row($result);
+            return mysqli_fetch_row($result) ?: false;
         }
 
         function mysql_fetch_array($result)
@@ -294,7 +294,7 @@ namespace {
                 return false;
                 // @codeCoverageIgnoreEnd
             }
-            return mysqli_fetch_array($result);
+            return mysqli_fetch_array($result) ?: false;
         }
 
         function mysql_fetch_assoc($result) /* : array|null */
@@ -304,7 +304,8 @@ namespace {
                 return false;
                 // @codeCoverageIgnoreEnd
             }
-            return mysqli_fetch_assoc($result);
+
+            return mysqli_fetch_assoc($result) ?: false;
         }
 
         function mysql_fetch_object($result, $class = null, array $params = []) /* : object|null */
@@ -321,11 +322,7 @@ namespace {
                 $object = mysqli_fetch_object($result, $class, $params);
             }
 
-            if($object == null) {
-                return false;
-            }
-            
-            return $object;
+            return $object ?: false;
         }
 
         function mysql_data_seek($result, $offset)