实例如下：
<?php
class dbda
{
public $host="localhost";
public $uid = "root";
public $pwd = "123";
public $dbname = "mydb";
//成员方法
public function query($sql,$type=1)
{
$db = new mysqli($this->host,$this->uid,$this->pwd,$this->dbname);
$r = $db->query($sql);
if($type==1)
{
return $r->fetch_all();
}
else
{
return $r;
}
}
//返回字符串的方法
public function strquery($sql,$type=1)
{
$db = new mysqli($this->host,$this->uid,$this->pwd,$this->dbname);
$r = $db->query($sql);
if($type==1)
{
$attr = $r->fetch_all();
$str = "";
foreach($attr as $v)
{
$str .= implode("^",$v)."|";
}
return substr($str,0,strlen($str)-1);
}
else
{
return $r;
}
}
//返回json
function jsonquery($sql,$type=1)
{
$db = new mysqli($this->host,$this->uid,$this->pwd,$this->dbname);
$r = $db->query($sql);
if($type==1)
{
return json_encode($r->fetch_all(mysqli_assoc));
}
else
{
return $r;
}
}
}
以上这篇php封装返回ajax字符串和json数组的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持硕编程。
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