/**
* Execute SQL query
* @category WoW Database Handler
* @access private
* @param string $safe_sql
* @param int $queryType
* @return mixed
**/
private function _query($safe_sql, $queryType)
{
// Execute query and calculate execution time
$make_array = array();
$query_start = microtime(true);
$this->queryCount++;
if ($this->driver_type == 'mysqli') {
$performed_query = @mysqli_query($this->connectionLink, $safe_sql);
$this->errmsg = @mysqli_error($this->connectionLink);
$this->errno = @mysqli_errno($this->connectionLink);
} else {
$performed_query = @mysql_query($safe_sql, $this->connectionLink);
$this->errmsg = @mysql_error($this->connectionLink);
$this->errno = @mysql_errno($this->connectionLink);
}
if (!$performed_query) {
WoW_Log::WriteLog('%s : unable to execute SQL query (%s). MySQL error: %s', __METHOD__, $safe_sql, $this->errmsg ? sprintf('"%s" (Error #%d)', $this->errmsg, $this->errno) : 'none');
return false;
}
$result = false;
switch ($queryType) {
case SINGLE_CELL:
if ($this->driver_type == 'mysqli') {
$tmp = @mysqli_fetch_array($performed_query);
// this works faster than mysql_result
} else {
$tmp = @mysql_fetch_array($performed_query);
// this works faster than mysql_result
}
$result = $tmp[0];
unset($tmp);
break;
case SINGLE_ROW:
if ($this->driver_type == 'mysqli') {
$result = @mysqli_fetch_assoc($performed_query);
} else {
$result = @mysql_fetch_assoc($performed_query);
}
if (is_array($result)) {
foreach ($result as $rKey => $rValue) {
if (is_string($rKey)) {
$make_array[$rKey] = $rValue;
}
}
$result = $make_array;
}
break;
case MULTIPLY_ROW:
$result = array();
if ($this->driver_type == 'mysqli') {
while ($_result = @mysqli_fetch_assoc($performed_query)) {
if (is_array($_result)) {
foreach ($_result as $rKey => $rValue) {
if (is_string($rKey)) {
$make_array[$rKey] = $rValue;
}
}
$result[] = $make_array;
} else {
$result[] = $_result;
}
}
} else {
while ($_result = @mysql_fetch_assoc($performed_query)) {
if (is_array($_result)) {
foreach ($_result as $rKey => $rValue) {
if (is_string($rKey)) {
$make_array[$rKey] = $rValue;
}
}
$result[] = $make_array;
} else {
$result[] = $_result;
}
}
}
break;
case OBJECT_QUERY:
$result = array();
if ($this->driver_type == 'mysqli') {
while ($_result = @mysqli_fetch_object($performed_query)) {
$result[] = $_result;
}
} else {
while ($_result = @mysql_fetch_object($performed_query)) {
$result[] = $_result;
}
}
break;
case SQL_QUERY:
$result = true;
break;
default:
$result = false;
break;
}
$query_end = microtime(true);
$queryTime = round($query_end - $query_start, 4);
WoW_Log::WriteSql('[%s ms]: %s', $queryTime, $safe_sql);
$this->queryTimeGeneration += $queryTime;
unset($performed_query);
return $result;
}