sql server 2008 - Using adodb-mssqlnative.inc.php with a timeout for update without any result -

i using php5.4.38 apache2.2.29 on windows server 2008 mssql database utf8 fields chinese language.

i using adodb , affected driver adodb-mssqlnative.inc.php in adodb/drivers folder. seems using timeout connection-id update query, update not writing database. build own function show doing:

function sql_own_query($connection_id, $sql, $params) {     $options=array('querytimeout' => 90);     if (substr($sql, 0, 6) != 'select') {         $options = array();     }     if (!empty($options)) {         $result = sqlsrv_query($connection_id, $sql, $params, $options);     } else {         $result = sqlsrv_query($connection_id, $sql, $params);     }     return $result; }  // returns query id if successful, otherwise false function _query($sql,$inputarr) {     $this->_errormsg = false;     if (is_array($inputarr)) {         $rez = $this->sql_own_query($this->_connectionid,$sql,$inputarr);         //$rez = sqlsrv_query($this->_connectionid,$sql,$inputarr);     } else if (is_array($sql)) {         $rez = $this->sql_own_query($this->_connectionid,$sql[1],$inputarr);         //$rez = sqlsrv_query($this->_connectionid,$sql[1],$inputarr);     } else {         $rez = $this->sql_own_query($this->_connectionid,$sql, array());         //$rez = sqlsrv_query($this->_connectionid,$sql, array());     } 

so is: checking if select statement , put $options - parameter it. if update statement go through without timeout parameter.

the problem is, querytimeout set, update query not modify table. when execute:

_query('select ...');//timeout set 90 _query('update ...');//timeout still set 

the update statement not have result. table same before. same result happen when enlarge timeout 300.

i tested deactivate connectionpooling described here: https://msdn.microsoft.com/en-us/library/ff628167(v=sql.105).aspx without positive result.

so question is: why update timeout conclude empty result. database not showing error, nor php , apache.

ps: due software logic, not possible disable select statement before. :)

thanks hints!