Question

对于从PHP到MSSQL的数据库连接，我创建了以下代码。有人可以建议我，我的代码中的__destruct（）函数是否自动工作并关闭数据库连接？这是我的代码：

<?php
    class db{
        private $connection;
        private $server, $username, $password, $database, $charset;

        public function __construct($server, $username, $password, $database, $charset){
            $this->server = $server;
            $this->username = $username;
            $this->password = $password;
            $this->database = $database;
            $this->charset = $charset;

            $connectionInfo = array('UID'=>$this->username,
                                    'PWD'=>$this->password,
                                    'Database'=>$this->database,
                                    'CharacterSet'=>$this->charset);

            $this->connection = sqlsrv_connect($this->server, $connectionInfo);

            if ($this->connection === false){
                echo '<h2>Unable to connect to database</h2><br/>';
                die (print_r(sqlsrv_errors(), true));
            };
        }

        public function __destruct(){
            sqlsrv_close($this->connection);
        }

        public function query($query, $params=null){
            $result = sqlsrv_query($this->connection, $query, $params);

            if (!$result){
                echo 'Error in statement execution.\n';
                die(print_r(sqlsrv_errors(), true));
            }

            return $result;
        }
    }

Answer 1

除非未调用__destruct方法，否则您的连接将被关闭。以下方案导致__destruct无法执行：

如果在另一个析构函数中调用“exit”

取决于PHP版本：如果在“register_shutdown_function”函数中调用“exit”

如果代码中某处存在致命错误

如果在另一个析构函数中抛出异常

如果您尝试在析构函数中处理异常（PHP＆gt; = 5.3.0）

选中此https://stackoverflow.com/a/2385581/603256

PHP的MSSQL数据库连接（sqlsrv_close连接问题）

1 个答案: