PHP报错,请高手指教.!

报错:Parse error: syntax error, unexpected T_VARIABLE, expecting T_FUNCTION in E:\APMServ5.2.6\www\htdocs\terry\yz\checks.php on line 4

代码:<?php
include_once("chekyz.php");
class checks{
$number = $pos['number'];
$chekyz = new chekyz;
$error = $this->check($_POST);

function num($number){
$number = strtolower($number);
echo ($number);
//print_r($number);
//print_r($_SESSION['vcode']);
}

function check($_POST){

$Error = false;
if($number != $_SESSION['vcode'] || empty($number))
{
echo 1;
die();
}else{
echo 2;
}
return $Error;
}
}
$checks = new checks;
$checks->num($number);
?>
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一个验证码验证代码.

1.$_SESSION['vcode']的值没有传递过来.要自己构造一个session_start();

2.$number = $pos['number'];
$chekyz = new chekyz;
$error = $this->check($_POST);
要写在一个方法里面.

$number = $pos['number']; //$pos是哪来的变量 $chekyz = new chekyz;//一般不这么初始化的，构造函数哪去了 $error = $this->check($_POST);//同上 你的报错估计就是$pos变量没有初始化。 还有一般用形参，而不是直接将$_POST作为参数的名字，，， function check($_POST){ } function check($a = null){ } 问题很多，楼主慢慢改吧