将数据库常用的操作(连接数据库,获得所有数据,获得一条记录,获得一列记录,获得一条索引数组,获得一条关联数组)都给封装到db.class.php里面,谁需要谁继承这个类
注意:提交封装的类文件
<?php
class db{
private $host;
private $dbname;
private $user;
private $pass;
public function __construct($host,$dbname,$user,$pass){
$this->host=$host;
$this->dbname=$dbname;
$this->user=$user;
$this->pass=$pass;
$this->connect();
}
private function connect(){
mysql_connect($this->host,$this->user,$this->pass);
mysql_select_db($this->dbname);
mysql_query("set names utf8");
}
public function getAll($sql){
$result = mysql_query($sql);
$rows = array();
while($row = mysql_fetch_assoc($result)){
$rows[] = $row;
}
return $rows;
}
public function getOne($sql){
$result = mysql_query($sql);
$total = mysql_fetch_array($result);
$total_row = $total[0];
return $total_row;
}
}
?>
注意:提交封装的类文件
<?php
class db{
private $host;
private $dbname;
private $user;
private $pass;
public function __construct($host,$dbname,$user,$pass){
$this->host=$host;
$this->dbname=$dbname;
$this->user=$user;
$this->pass=$pass;
$this->connect();
}
private function connect(){
mysql_connect($this->host,$this->user,$this->pass);
mysql_select_db($this->dbname);
mysql_query("set names utf8");
}
public function getAll($sql){
$result = mysql_query($sql);
$rows = array();
while($row = mysql_fetch_assoc($result)){
$rows[] = $row;
}
return $rows;
}
public function getOne($sql){
$result = mysql_query($sql);
$total = mysql_fetch_array($result);
$total_row = $total[0];
return $total_row;
}
}
?>