关于用户注册页面有几句不明白

[MILKZHOU]

这段代码是用户注册页面进行提交，需要的PHP代码，
我想问一下这一段代码里面，以下的这两段有什么用呢？

 $obj=new save_reg($_POST["usernc"],md5($_POST["userpwd1"]),$_POST["truename"],$_POST["sex"],$_POST["email"],$_POST["tel"],$_POST["qq"],$_POST["photo"],$_POST["address"]);
 $obj->savereg();

以下是全部代码的部分：

<?php
session_start();

 class save_reg{
 
   private $usernc;
   private $userpwd;
   private $truename;
   private $sex;
   private $email;
   private $tel;
   private $qq;
   private $photo;
   private $address;
   
   public function __construct($usernc,$userpwd,$truename,$sex,$email,$tel,$qq,$photo,$address){
       $this->usernc=$usernc;
	   $this->userpwd=$userpwd;
	   $this->truename=$truename;
	   $this->sex=$sex;
	   $this->email=$email;
	   $this->tel=$tel;
	   $this->qq=$qq;
	   $this->photo=$photo;
	   $this->address=$address;
   }
   
   public function savereg(){
      include_once("conn.php");
	 $sql=mysql_query("select usernc from tb_user where usernc='".$this->usernc."'",$conn);
        if($info=mysql_fetch_array($sql)){
	     echo "<script>alert('该用户昵称已经被占用，请重新选择！');history.back();</script>";
		 exit;
	  }
	  
      if(mysql_query("insert into tb_user(usernc,pwd,truename,email,sex,tel,qq,photo,address,logintimes,regtime,lastlogintime,ip) values('".$this->usernc."','".$this->userpwd."','".$this->truename."','".$this->email."','".$this->sex."','".$this->tel."','".$this->qq."','".$this->photo."','".$this->address."','1','".date("Y-m-j H:i:s")."','".date("Y-m-j H:i:s")."','".$_SERVER["PHP_SELF"]."')",$conn)){
	    if($_SESSION["unc"]!=""){
		   session_unregister("unc");
		}
		session_register("unc");
		$_SESSION["unc"]=$this->usernc;
	    echo "<script>alert('用户注册成功！');window.location.href='index.php';</script>";
	  }else{
	    echo "<script>alert('用户注册失败！');history.back();</script>";
	  }
   }
 }
 
 $obj=new save_reg($_POST["usernc"],md5($_POST["userpwd1"]),$_POST["truename"],$_POST["sex"],$_POST["email"],$_POST["tel"],$_POST["qq"],$_POST["photo"],$_POST["address"]);
 $obj->savereg();
?>

[MILKZHOU]

我根据上面所提的代码改写了一下，但他老报错，我都不知道哪里出了问题。

报错指着的地方

 $obj=new save_reg($_POST["name"],$_POST["num"],$_POST["sex"],$_POST["department"],$_POST["class1"]);
 $obj->savereg();

整段代码

<?php
session_start();

 class save_reg{

   private $name;
   private $num;
   private $sex;
   private $department;
   private $class;

   public function __construct($name,$num,$sex,$department,$class1){
       $this->name=$name;
	   $this->num=$num;
	   $this->sex=$sex;
	   $this->department=$department;
	   $this->class1=$class1;
   }

   public function savereg(){
      include_once("conn.php");
	 	$sql=mysql_query("select usernc from db_stu_info where name='".$this->name."'");
        if($info=mysql_fetch_array($sql)){
	     echo "<script>alert('该学生已注册，请重新填写！');history.back();</script>";
		 exit;
	 	 }

	$sql = "insert into db_stu_info(id,name,num,sex,department,class1) values('','".$this->name."','".$this->num."','".$this->sex."','".$this->department."','".$this->class1."'";
	$sql=mysql_query ( $sql ) or die ( "执行sql失败!" . mysql_error () );

	if($sql)
		{
			$num = mysql_affected_rows ();
			if ($num > 0) {
						//header ( "Location:department.php" );
						echo "<script>alert('学生信息添加成功！');window.location.href='stu_info.php';</script>";
					} else {
						echo "<script>alert('学生信息添加失败！');history.back();</script>";
					}

		}
}

 $obj=new save_reg($_POST["name"],$_POST["num"],$_POST["sex"],$_POST["department"],$_POST["class1"]);
 $obj->savereg();
?>

[gsdfdfdere19800811]

看看报什么错误

[MILKZHOU]

报错信息是这个：

Parse error: syntax error, unexpected T_VARIABLE, expecting T_FUNCTION in D:\wamp\www\student_zhu\stu_info_add.php on line 44

[MILKZHOU]

哈。我已经发现了错误啦，原来是最后少了一个“}”

[JatAwn]

构建对象，调用方法

[codeyell-com]

面向對象
樓主看一下php的類

那句話新建了一個save_reg對象，并調用類里的__construct方法，初始化變量。