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/**
***********************************************************************************************
* @copyright 2004-2016 The Admidio Team
* @see http://www.admidio.org/
* @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License v2.0 only
***********************************************************************************************
*/
/**
* @class Database
* @brief Handle the connection to the database, send all sql statements and handle the returned rows.
*
* This class creates a connection to the database and provides several methods
* to communicate with the database. There are methods to send sql statements
* and to handle the response of the database. This class also supports transactions.
* Just call Database#startTransaction and finish it with Database#endTransaction. If
* you call this multiple times only 1 transaction will be open and it will be closed
* after the last endTransaction was send.
* @par Examples
* To open a connection you can use the settings of the config.php of Admidio.
* @code
* // create object and open connection to database
* try
* {
* $gDb = new Database($gDbType, $g_adm_srv, null, $g_adm_db, $g_adm_usr, $g_adm_pw);
* }
* catch (AdmException $e)
* {
* $e->showText();
* }
* @endcode
* Now you can use the new object @b $gDb to send a query to the database
* @code
* // send sql to database and assign the returned PDOStatement
* $organizationsStatement = $gDb->query('SELECT org_shortname, org_longname FROM adm_organizations');
*
* // now fetch all rows of the returned PDOStatement within one array
* $organizationsList = $organizationsStatement->fetchAll();
*
* // Array with the results:
* // $organizationsList = array(
* // [0] => array(
* // [org_shortname] => 'DEMO'
* // [org_longname] => 'Demo-Organization'
* // )
* // [1] => array(
* // [org_shortname] => 'TEST'
* // [org_longname] => 'Test-Organization'
* // )
*
* // you can also go step by step through the returned PDOStatement
* while ($organizationNames = $organizationsStatement->fetch())
* {
* echo $organizationNames['shortname'].' '.$organizationNames['longname'];
* }
* @endcode
*/
class Database
{
protected $host;
protected $port;
protected $dbName;
protected $username;
protected $password;
protected $options;
protected $dsn;
protected $pdo; ///< The PDO object that handles the communication with the database.
protected $transactions; ///< The transaction marker. If this is > 0 than a transaction is open.
protected $pdoStatement; ///< The PdoStatement object which is needed to handle the return of a query.
protected $dbStructure; ///< array with arrays of every table with their structure
protected $fetchArray;
protected $minRequiredVersion; ///< The minimum required version of this database that is necessary to run Admidio.
protected $databaseName; ///< The name of the database e.g. 'MySQL'
/**
* The constructor will check if a valid engine was set and try to connect to the database.
* If the engine is invalid or the connection not possible an exception will be thrown.
* @param string $engine The database type that is supported from Admidio. @b mysql and @b pgsql are valid values.
* @param string $host The hostname or server where the database is running. e.g. localhost or 127.0.0.1
* @param int $port If you don't use the default port of the database then set your port here.
* @param string $dbName Name of the database you want to connect.
* @param string $username Username to connect to database
* @param string $password Password to connect to database
* @param array $options
* @throws AdmException
*/
public function __construct($engine, $host, $port = null, $dbName, $username = null, $password = null, array $options = array())
{
// for compatibility to old versions accept the string postgresql
if ($engine === 'postgresql')
{
$engine = 'pgsql';
}
$this->host = $host;
$this->port = $port;
$this->dbName = $dbName;
$this->username = $username;
$this->password = $password;
$this->options = $options;
$this->transactions = 0;
$this->fetchArray = array();
$this->dbStructure = array();
$this->minRequiredVersion = '';
$this->databaseName = '';
try
{
$availableDrivers = PDO::getAvailableDrivers();
if (count($availableDrivers) === 0)
{
throw new PDOException('PDO does not support any drivers');
}
if (!in_array($engine, $availableDrivers, true))
{
throw new PDOException('The requested PDO driver '.$engine.' is not supported');
}
$this->setDSNString($engine);
// needed to avoid leaking username, password, ... if a PDOException is thrown
$this->pdo = new PDO($this->dsn, $this->username, $this->password, $this->options);
$this->setConnectionOptions();
}
catch (PDOException $e)
{
throw new AdmException($e->getMessage());
}
}
/**
* Create a valid DSN string for the engine that was set through the constructor.
* If no valid engine is set than an exception is thrown.
* @param string $engine The database type that is supported from Admidio. @b mysql and @b pgsql are valid values.
* @throws \PDOException
*/
private function setDSNString($engine)
{
switch ($engine)
{
case 'mysql':
if ($this->port === null)
{
$this->dsn = 'mysql:host='.$this->host.';dbname='.$this->dbName;
}
else
{
$this->dsn = 'mysql:host='.$this->host.';port='.$this->port.';dbname='.$this->dbName;
}
break;
case 'pgsql':
if ($this->port === null)
{
$this->dsn = 'pgsql:host='.$this->host.';dbname='.$this->dbName;
}
else
{
$this->dsn = 'pgsql:host='.$this->host.';port='.$this->port.';dbname='.$this->dbName;
}
break;
default:
throw new PDOException('Engine is not supported by Admidio');
}
}
/**
* Set connection specific options like UTF8 connection.
* These options should always be set if Admidio connect to a database.
*/
private function setConnectionOptions()
{
global $gDebug;
if ($gDebug)
{
$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // maybe change to PDO::ERRMODE_WARNING
}
else
{
$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
}
$this->pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
$this->pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, true); // change to false if we convert to prepared statements
$this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_BOTH); // maybe change in future to PDO::FETCH_ASSOC or PDO::FETCH_OBJ
$this->pdo->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
// Connect to database with UTF8
$this->query('SET NAMES \'UTF8\'');
if ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'mysql')
{
// set ANSI mode, that SQL could be more compatible with other DBs
$this->query('SET SQL_MODE = \'ANSI\'');
// if the server has limited the joins, it can be canceled with this statement
$this->query('SET SQL_BIG_SELECTS = 1');
}
}
/**
* @param string $property Property name of the in use database config
* @return string Returns the value of the chosen property
*/
protected function getPropertyFromDatabaseConfig($property)
{
$xmlDatabases = new SimpleXMLElement(SERVER_PATH.'/adm_program/system/databases.xml', null, true);
$node = $xmlDatabases->xpath('/databases/database[@id="'.$this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME).'"]/'.$property);
return (string) $node[0];
}
/**
* Get the name of the database that is running Admidio.
* @return string Returns a string with the name of the database e.g. 'MySQL' or 'PostgreSQL'
*/
public function getName()
{
if ($this->databaseName === '')
{
$this->databaseName = $this->getPropertyFromDatabaseConfig('name');
}
return $this->databaseName;
}
/**
* Get the minimum required version of the database that is necessary to run Admidio.
* @return string Returns a string with the minimum required database version e.g. '5.0.1'
*/
public function getMinimumRequiredVersion()
{
if ($this->minRequiredVersion === '')
{
$this->minRequiredVersion = $this->getPropertyFromDatabaseConfig('minversion');
}
return $this->minRequiredVersion;
}
/**
* Get the version of the connected database.
* @return string Returns a string with the database version e.g. '5.5.8'
*/
public function getVersion()
{
$versionStatement = $this->query('SELECT version()');
$version = $versionStatement->fetchColumn();
if ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'pgsql')
{
// the string (PostgreSQL 9.0.4, compiled by Visual C++ build 1500, 64-bit) must be separated
$versionArray = explode(',', $version);
$versionArray2 = explode(' ', $versionArray[0]);
return $versionArray2[1];
}
return $version;
}
/**
* Start a transaction if no open transaction exists. If you call this multiple times
* only 1 transaction will be open and it will be closed after the last endTransaction was send.
* @return bool
* @see Database#endTransaction
* @see Database#rollback
*/
public function startTransaction()
{
global $gDebug;
// If we are within a transaction we will not open another one,
// but enclose the current one to not loose data (prevening auto commit)
if ($this->transactions > 0)
{
++$this->transactions;
return true;
}
// if debug mode then log all sql statements
if ($gDebug)
{
error_log('START TRANSACTION');
}
$result = $this->pdo->beginTransaction();
if (!$result)
{
$this->showError();
// => EXIT
}
$this->transactions = 1;
return $result;
}
/**
* The method will commit an open transaction to the database. If the
* transaction counter is greater 1 than only the counter will be
* decreased and no commit will performed.
* @return bool Returns @b true if the commit was successful otherwise @b false
* @see Database#startTransaction
* @see Database#rollback
*/
public function endTransaction()
{
global $gDebug;
// if there is no open transaction then do nothing and return
if ($this->transactions === 0)
{
return true;
}
// If there was a previously opened transaction we do not commit yet...
// but count back the number of inner transactions
if ($this->transactions > 1)
{
--$this->transactions;
return true;
}
// if debug mode then log all sql statements
if ($gDebug)
{
error_log('COMMIT');
}
$result = $this->pdo->commit();
if (!$result)
{
$this->showError();
// => EXIT
}
$this->transactions = 0;
return $result;
}
/**
* Escapes special characters within the input string.
* In contrast to the <a href="https://secure.php.net/manual/en/pdo.quote.php">quote</a> method,
* the returned string has no quotes around the input string!
* @param string $string The string to be quoted.
* @return string Returns a quoted string that is theoretically safe to pass into an SQL statement.
* @see <a href="https://secure.php.net/manual/en/pdo.quote.php">PDO::quote</a>
*/
public function escapeString($string)
{
return trim($this->pdo->quote($string), "'");
}
/**
* This method will create an backtrace of the current position in the script. If several
* scripts were called than each script with their position will be listed in the backtrace.
* @return string Returns a string with the backtrace of all called scripts.
*/
protected function getBacktrace()
{
$output = '<div style="font-family: monospace;">';
$backtrace = debug_backtrace();
foreach ($backtrace as $number => $trace)
{
// We skip the first one, because it only shows this file/function
if ($number === 0)
{
continue;
}
// Strip the current directory from path
if (empty($trace['file']))
{
$trace['file'] = '';
}
else
{
$trace['file'] = str_replace(array(SERVER_PATH, '\\'), array('', '/'), $trace['file']);
$trace['file'] = substr($trace['file'], 1);
}
$args = array();
// If include/require/include_once is not called, do not show arguments - they may contain sensible information
if (!in_array($trace['function'], array('include', 'require', 'include_once'), true))
{
unset($trace['args']);
}
else
{
// Path...
if (!empty($trace['args'][0]))
{
$argument = htmlentities($trace['args'][0]);
$argument = str_replace(array(SERVER_PATH, '\\'), array('', '/'), $argument);
$argument = substr($argument, 1);
$args[] = "'{$argument}'";
}
}
$trace['class'] = array_key_exists('class', $trace) ? $trace['class'] : '';
$trace['type'] = array_key_exists('type', $trace) ? $trace['type'] : '';
$output .= '<br />';
$output .= '<strong>FILE:</strong> '.htmlentities($trace['file']).'<br />';
$output .= '<strong>LINE:</strong> '.((!empty($trace['line'])) ? $trace['line'] : '').'<br />';
$output .= '<strong>CALL:</strong> '.htmlentities($trace['class'].$trace['type'].$trace['function']).
'('.(count($args) ? implode(', ', $args) : '').')<br />';
}
$output .= '</div>';
return $output;
}
/**
* Returns the ID of the unique id column of the last INSERT operation.
* This method replace the old method Database#insert_id.
* @return string Return ID value of the last INSERT operation.
* @see Database#insert_id
*/
public function lastInsertId()
{
if ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'pgsql')
{
$lastValStatement = $this->query('SELECT lastval()');
return $lastValStatement->fetchColumn();
}
return $this->pdo->lastInsertId();
}
/**
* Send a sql statement to the database that will be executed. If debug mode is set
* then this statement will be written to the error log. If it's a @b SELECT statement
* then also the number of rows will be logged. If an error occurred the script will
* be terminated and the error with a backtrace will be send to the browser.
* @param string $sql A string with the sql statement that should be executed in database.
* @param bool $showError Default will be @b true and if an error the script will be terminated and
* occurred the error with a backtrace will be send to the browser. If set to
* @b false no error will be shown and the script will be continued.
* @return \PDOStatement For @b SELECT statements an object of <a href="https://secure.php.net/manual/en/class.pdostatement.php">PDOStatement</a> will be returned.
* This should be used to fetch the returned rows. If an error occurred then @b false will be returned.
*/
public function query($sql, $showError = true)
{
global $gDebug;
if ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'pgsql')
{
$sqlCompare = strtolower($sql);
// prepare the sql statement to be compatible with PostgreSQL
if (strpos($sqlCompare, 'create table') !== false || strpos($sqlCompare, 'alter table') !== false)
{
if (strpos($sqlCompare, 'create table') !== false)
{
// on a create-table-statement if necessary cut existing MySQL table options
$sql = substr($sql, 0, strrpos($sql, ')') + 1);
}
$replaceArray = array(
// PostgreSQL doesn't know unsigned
'unsigned' => '',
// PostgreSQL interprets a boolean as string so transform it to a smallint
'boolean' => 'smallint',
// A blob is in PostgreSQL a bytea datatype
'blob' => 'bytea'
);
$sql = str_replace(array_keys($replaceArray), array_values($replaceArray), $sql);
// Auto_Increment must be replaced with Serial
$posAutoIncrement = strpos($sql, 'AUTO_INCREMENT');
if ($posAutoIncrement > 0)
{
$posInteger = strrpos(substr($sql, 0, $posAutoIncrement), 'integer');
$sql = substr($sql, 0, $posInteger).' serial '.substr($sql, $posAutoIncrement + 14);
}
}
}
// if debug mode then log all sql statements
if ($gDebug)
{
error_log($sql);
}
try
{
$this->fetchArray = array();
$this->pdoStatement = $this->pdo->query($sql);
}
catch (PDOException $e)
{
if($showError)
{
$this->showError();
// => EXIT
}
}
if ($gDebug && strpos(strtoupper($sql), 'SELECT') === 0)
{
// if debug modus then show number of selected rows
error_log('Found rows: '.$this->pdoStatement->rowCount());
}
return $this->pdoStatement;
}
/**
* If there is a open transaction than this method sends a rollback
* to the database and will set the transaction counter to zero.
* @return bool
* @see Database#startTransaction
* @see Database#endTransaction
*/
public function rollback()
{
global $gDebug;
if ($this->transactions > 0)
{
// if debug mode then log all sql statements
if ($gDebug)
{
error_log('ROLLBACK');
}
$result = $this->pdo->rollBack();
if (!$result)
{
$this->showError();
// => EXIT
}
$this->transactions = 0;
return true;
}
return false;
}
/**
* Methods reads all columns and their properties from the database table.
* @param string $table Name of the database table for which the columns should be shown.
* @param bool $showColumnProperties If this is set to @b false only the column names were returned.
* @return string[]|array[] Returns an array with each column and their properties if $showColumnProperties is set to @b true.
* The array has the following format:
* array (
* 'column1' => array (
* 'serial' => '1',
* 'null' => '0',
* 'key' => '0',
* 'type' => 'integer'
* ),
* 'column2' => array (...)
* ...
* )
* TODO https://secure.php.net/manual/en/pdostatement.getcolumnmeta.php
* https://www.postgresql.org/docs/9.5/static/infoschema-columns.html
* https://dev.mysql.com/doc/refman/5.7/en/columns-table.html
*/
public function showColumns($table, $showColumnProperties = true)
{
if (!array_key_exists($table, $this->dbStructure))
{
$columnProperties = array();
if ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'mysql')
{
$sql = 'SHOW COLUMNS FROM '.$table;
$columnsStatement = $this->query($sql);
$columnsList = $columnsStatement->fetchAll();
foreach ($columnsList as $properties)
{
$columnProperties[$properties['Field']]['serial'] = 0;
$columnProperties[$properties['Field']]['null'] = 0;
$columnProperties[$properties['Field']]['key'] = 0;
if ($properties['Extra'] === 'auto_increment')
{
$columnProperties[$properties['Field']]['serial'] = 1;
}
if ($properties['Null'] === 'YES')
{
$columnProperties[$properties['Field']]['null'] = 1;
}
if ($properties['Key'] === 'PRI' || $properties['Key'] === 'MUL')
{
$columnProperties[$properties['Field']]['key'] = 1;
}
if (strpos($properties['Type'], 'tinyint(1)') !== false)
{
$columnProperties[$properties['Field']]['type'] = 'boolean';
}
elseif (strpos($properties['Type'], 'smallint') !== false)
{
$columnProperties[$properties['Field']]['type'] = 'smallint';
}
elseif (strpos($properties['Type'], 'int') !== false)
{
$columnProperties[$properties['Field']]['type'] = 'integer';
}
else
{
$columnProperties[$properties['Field']]['type'] = $properties['Type'];
}
}
}
elseif ($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME) === 'pgsql')
{
$sql = 'SELECT column_name, column_default, is_nullable, data_type
FROM information_schema.columns
WHERE table_name = \''.$table.'\'';
$columnsStatement = $this->query($sql);
$columnsList = $columnsStatement->fetchAll();
foreach ($columnsList as $properties)
{
$columnProperties[$properties['column_name']]['serial'] = 0;
$columnProperties[$properties['column_name']]['null'] = 0;
$columnProperties[$properties['column_name']]['key'] = 0;
if (strpos($properties['column_default'], 'nextval') !== false)
{
$columnProperties[$properties['column_name']]['serial'] = 1;
}
if ($properties['is_nullable'] === 'YES')
{
$columnProperties[$properties['column_name']]['null'] = 1;
}
/*if ($properties['Key'] === 'PRI' || $properties['Key'] === 'MUL')
{
$columnProperties[$properties['column_name']]['key'] = 1;
}*/
if (strpos($properties['data_type'], 'timestamp') !== false)
{
$columnProperties[$properties['column_name']]['type'] = 'timestamp';
}
elseif (strpos($properties['data_type'], 'time') !== false)
{
$columnProperties[$properties['column_name']]['type'] = 'time';
}
else
{
$columnProperties[$properties['column_name']]['type'] = $properties['data_type'];
}
}
}
// safe array with table structure in class array
$this->dbStructure[$table] = $columnProperties;
}
if ($showColumnProperties)
{
// returns all columns with their properties of the table
return $this->dbStructure[$table];
}
// returns only the column names of the table.
$tableColumns = array();
foreach ($this->dbStructure[$table] as $columnName => $columnProperties)
{
$tableColumns[] = $columnName;
}
return $tableColumns;
}
/**
* Display the error code and error message to the user if a database error occurred.
* The error must be read by the child method. This method will call a backtrace so
* you see the script and specific line in which the error occurred.
* @return void Will exit the script and returns a html output with the error information.
*/
public function showError()
{
global $g_root_path, $gMessage, $gPreferences, $gCurrentOrganization, $gDebug, $gL10n;
$backtrace = $this->getBacktrace();
// Rollback on open transaction
if ($this->transactions > 0)
{
$this->pdo->rollBack();
}
// transform the database error to html
$errorCode = $this->pdo->errorCode();
$errorInfo = $this->pdo->errorInfo();
$htmlOutput = '
<div style="font-family: monospace;">
<p><strong>S Q L - E R R O R</strong></p>
<p><strong>CODE:</strong> '.$errorCode.'</p>
'.$errorInfo[1].'<br /><br />
'.$errorInfo[2].'<br /><br />
<strong>B A C K T R A C E</strong><br />
'.$backtrace.'
</div>';
// in debug mode show error in log file
if ($gDebug)
{
error_log($errorCode.': '.$errorInfo[1]."\n".$errorInfo[2]);
}
// display database error to user
if (isset($gPreferences) && defined('THEME_SERVER_PATH') && !headers_sent())
{
// create html page object
$page = new HtmlPage($gL10n->get('SYS_DATABASE_ERROR'));
$page->addHtml($htmlOutput);
$page->show();
}
else
{
echo $htmlOutput;
}
exit();
}
/**
* Returns an array with all available PDO database drivers of the server.
* @deprecated 3.1.0:4.0.0 Switched to native PDO method.
* @return string[] Returns an array with all available PDO database drivers of the server.
* @see <a href="https://secure.php.net/manual/en/pdo.getavailabledrivers.php">PDO::getAvailableDrivers</a>
*/
public static function getAvailableDBs()
{
return PDO::getAvailableDrivers();
}
/**
* Fetch a result row as an associative array, a numeric array, or both.
* @deprecated 3.1.0:4.0.0 Switched to native PDO method.
* Please use the PHP class <a href="https://secure.php.net/manual/en/class.pdostatement.php">PDOStatement</a>
* and the method <a href="https://secure.php.net/manual/en/pdostatement.fetch.php">fetch</a> instead.
* @param \PDOStatement $pdoStatement An object of the class PDOStatement. This should be set if multiple
* rows where selected and other sql statements are also send to the database.
* @param int $fetchType Set the result type. Can contain @b PDO::FECTH_ASSOC for an associative array,
* @b PDO::FETCH_NUM for a numeric array or @b PDO::FETCH_BOTH (Default).
* @return mixed|null Returns an array that corresponds to the fetched row and moves the internal data pointer ahead.
* @see <a href="https://secure.php.net/manual/en/pdostatement.fetch.php">PDOStatement::fetch</a>
*/
public function fetch_array(PDOStatement $pdoStatement = null, $fetchType = PDO::FETCH_BOTH)
{
// if pdo statement is committed then fetch this object
if (is_object($pdoStatement))
{
return $pdoStatement->fetch($fetchType);
}
// if no pdo statement was committed then take the one from the last query
elseif (is_object($this->pdoStatement))
{
return $this->pdoStatement->fetch($fetchType);
}
return null;
}
/**
* Fetch a result row as an object.
* @deprecated 3.1.0:4.0.0 Switched to native PDO method.
* Please use methods Database#fetchAll or Database#fetch instead.
* Please use the PHP class <a href="https://secure.php.net/manual/en/class.pdostatement.php">PDOStatement</a>
* and the method <a href="https://secure.php.net/manual/en/pdostatement.fetchobject.php">fetchObject</a> instead.
* @param \PDOStatement $pdoStatement An object of the class PDOStatement. This should be set if multiple
* rows where selected and other sql statements are also send to the database.
* @return mixed|null Returns an object that corresponds to the fetched row and moves the internal data pointer ahead.
* @see <a href="https://secure.php.net/manual/en/pdostatement.fetchobject.php">PDOStatement::fetchObject</a>
*/
public function fetch_object(PDOStatement $pdoStatement = null)
{
// if pdo statement is committed then fetch this object
if (is_object($pdoStatement))
{
return $pdoStatement->fetchObject();
}
// if no pdo statement was committed then take the one from the last query
elseif (is_object($this->pdoStatement))
{
return $this->pdoStatement->fetchObject();
}
return null;
}
/**
* Returns the ID of the unique id column of the last INSERT operation.
* @deprecated 3.1.0:4.0.0 Renamed method to camelCase style.
* Please use methods Database#lastInsertId instead.
* @return string Return ID value of the last INSERT operation.
* @see Database#lastInsertId
*/
public function insert_id()
{
return $this->lastInsertId();
}
/**
* Returns the number of rows of the last executed statement.
* @deprecated 3.1.0:4.0.0 Switched to native PDO method.
* Please use the PHP class <a href="https://secure.php.net/manual/en/class.pdostatement.php">PDOStatement</a>
* and the method <a href="https://secure.php.net/manual/en/pdostatement.rowcount.php">rowCount</a> instead.
* @param \PDOStatement $pdoStatement An object of the class PDOStatement. This should be set if multiple
* rows where selected and other sql statements are also send to the database.
* @return int|null Return the number of rows of the result of the sql statement.
* @see <a href="https://secure.php.net/manual/en/pdostatement.rowcount.php">PDOStatement::rowCount</a>
*/
public function num_rows(PDOStatement $pdoStatement = null)
{
// if pdo statement is committed then fetch this object
if (is_object($pdoStatement))
{
return $pdoStatement->rowCount();
}
// if no pdo statement was committed then take the one from the last query
elseif (is_object($this->pdoStatement))
{
return $this->pdoStatement->rowCount();
}
return null;
}
}