php 类的写法
php 类的写法//Db.class.php
<?php class Db { private $_dblink; public $result; public function __construct($host, $user, $password, $dbname, $charset = 'utf8') { try{ if($this->_dblink = mysql_connect($host, $user, $password)) { if(mysql_select_db($dbname)) { $this->query("SET NAMES " . $charset . " ;"); } else { throw new Exception(mysql_error()); } } else { throw new Exception(mysql_error()); } } catch (Exception $e) { die($e->getMessage()); } } public function query($sql) { return $this->result = mysql_query($sql); } public function fetch() { return mysql_fetch_array($this->result); } public function fetchAll() { $rs = array(); $rsAll = array(); while($rs = mysql_fetch_array($this->result)) { $rsAll[] = $rs; } return $rsAll; } public function __destruct() { mysql_close($this->_dblink); } } //复制PHP内容到剪贴板PHP代码: //test.php $db = new Db('localhost', 'root', '', 'hent_qxoa'); $db->query("SELECT * FROM qx_user ;"); var_dump($db->fetchAll());
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