{\r
if ( self::$dbh == null ) return FALSE;\r
self::$execCount++;\r
- $result = self::showErrorDisplay(self::$dbh->query($statement));\r
+ $result = self::callQuery($statement);\r
if ( $row = $result->fetch(PDO::FETCH_NUM) )\r
{\r
return $row[0];\r
{\r
if ( self::$dbh == null ) return FALSE;\r
self::$execCount++;\r
- $result = self::showErrorDisplay(self::$dbh->query($statement));\r
+ $result = self::callQuery($statement);\r
return $result->fetch(PDO::FETCH_BOTH);\r
}\r
\r
{\r
if ( self::$dbh == null ) return FALSE;\r
self::$execCount++;\r
- return self::showErrorDisplay(self::$dbh->query($statement));\r
+ return self::callQuery($statement);\r
}\r
\r
/**\r
* DB::execute()\r
* Execute an SQL statement and return the number of affected rows.\r
* @param string $statement SQL Statement\r
- * @return int number of rows that were modified or deleted by the SQL statement you issued.\r
+ * @return int number of rows that were modified or deleted by the SQL statement you issued. If the call fails, it will return FALSE.\r
*/\r
public static function execute($statement)\r
{\r
if ( self::$dbh == null ) return FALSE;\r
self::$execCount++;\r
- return self::showErrorDisplay(self::$dbh->exec($statement));\r
+ return self::callExec($statement);\r
}\r
\r
/**\r
+ * DB::callQuery()\r
+ * Run the query to retrieve the result set.\r
+ * @param string $statement query to be executed\r
+ * @return PDOStatement Result set object. If the call fails, it will return FALSE.\r
+ */\r
+ private static function callQuery($statement)\r
+ {\r
+ $result = self::$dbh->query($statement);\r
+ if ( $result === FALSE )\r
+ {\r
+ self::showErrorDisplay($statement);\r
+ }\r
+ return $result;\r
+ }\r
+ \r
+ /**\r
+ * DB::callExec()\r
+ * Run the query and returns the number of rows affected.\r
+ * @param string $statement query to be executed\r
+ * @return int number of rows that were modified or deleted by the SQL statement you issued. If the call fails, it will return FALSE.\r
+ */\r
+ private static function callExec($statement)\r
+ {\r
+ $result = self::$dbh->exec($statement);\r
+ if ( $result === FALSE )\r
+ {\r
+ self::showErrorDisplay($statement);\r
+ }\r
+ return $result;\r
+ }\r
+ \r
+ /**\r
* DB::showErrorDisplay()\r
- * On the display query execution result query has an error in the case of FALSE.\r
- * @param mixed $result Query execution result\r
- * @return mixes Query execution result\r
+ * The error message is output to the screen of the query.\r
+ * @param string $statement query output to the screen\r
*/\r
- private static function showErrorDisplay($result)\r
+ private static function showErrorDisplay($statement)\r
{\r
global $CONF;\r
if ( array_key_exists('debug', $CONF) && $CONF['debug'] )\r
{\r
- if ( $result === FALSE )\r
- {\r
- $err = self::getError();\r
- print('mySQL error with query $query: ' . $err[2]);\r
- }\r
+ $err = self::getError();\r
+ print("mySQL error with query '{$statement}' : " . $err[2]);\r
}\r
- return $result;\r
+ return;\r
}\r
\r
/**\r