/** * Special handling for PDO query(). * All bind parameter names must begin with ':' * * @param string|Select $sql The SQL statement with placeholders. * @param array $bind An array of data to bind to the placeholders. * @return PDOStatement * @throws PDOException. */ public function query($sql, $bind = array()) { if (empty($bind) && $sql instanceof Select) { $bind = $sql->getBind(); } if (is_array($bind)) { foreach ($bind as $name => $value) { if (!is_int($name) && !preg_match('/^:/', $name)) { $newName = ":{$name}"; unset($bind[$name]); $bind[$newName] = $value; } } } //try {省略throw-catch-rethrow块,直接抛出PDOException // connect to the database if needed $this->_connect(); // is the $sql a Select object? if ($sql instanceof Select) { if (empty($bind)) { $bind = $sql->getBind(); } $sql = $sql->assemble(); } // make sure $bind to an array; // don't use (array) typecasting because // because $bind may be a Expr object if (!is_array($bind)) { $bind = array($bind); } //将结果缓冲当中的结果集读出来 Statement::flush(); // prepare and execute the statement with profiling $stmt = $this->prepare($sql); // 由于取消了Statement,因此将Profiler的控制代码移动到这里 // 由于所处的程序位置,省略了$qp->start(),简化了$qp->bindParams()的相关代码 if ($this->_profiler === false) { $stmt->execute($bind); } else { $q = $this->_profiler->queryStart($sql); $qp = $this->_profiler->getQueryProfile($q); if ($qp->hasEnded()) { $q = $this->_profiler->queryClone($qp); $qp = $this->_profiler->getQueryProfile($q); } $qp->bindParams($bind); $stmt->execute($bind); $this->_profiler->queryEnd($q); } // return the results embedded in the prepared statement object $stmt->setFetchMode($this->_fetchMode); return $stmt; //} catch (PDOException $e) { /** * @see StatementException */ //require_once 'Zend/Db/Statement/Exception.php'; //throw new StatementException($e->getMessage(), $e->getCode(), $e); //} }