mysql_fetch_array 与 mysql_fetch_object函数与用法_PHP教程

mysql_fetch_array 与 mysql_fetch_object函数与用法

mysql教程_fetch_array 与 mysql_fetch_object函数与用法

$conn=mysql_connect("127.0.0.1","root","root");
mysql_select_db("ip");
$sql="select * from adminblog ";
$result=mysql_query($sql,$conn);

while($rs=mysql_fetch_array($result))
{
echo $rs->username;
echo $rs->password;
}
//运行代码提示Notice: Trying to get property of non-object 好了，我们现在修改一下

while($rs=mysql_fetch_array($result))
{
echo $rs['username'];
echo $rs['password'];
}

//输出结果: adsense 5498bef14143cd98627fb0560cb5ded6
//现在来看一个mysql_fetch_object的实例

while($rs=mysql_fetch_object($result))
{
echo $rs['username'];

}

//运行后出来 Fatal error: Cannot use object of type stdClass as array in 说这不是一个数组

while($rs=mysql_fetch_object($result))
{
echo $rs->username;

}

//输出结果为 adsense
/*
总结:
mysql_fetch_object 把记录作来一个对象来处理，像我们用类时就要用->访问
mysql_fetch_array 把记录保存到一个数据所以可以用$rs['下标名'] 或$rs[0]数组编号

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