[英]store variable session php
嗨,我在理解会话是如何工作方面遇到了麻烦。 我正在尝试编写一个程序,它将重复请求输入一个数字,每次输入数字时,程序都要打印出来:
到目前为止这是我的代码:
<?php
session_start();
if(isset($_session['count']))
{
$_session['count'] = $count;
}else{
$_session['count'] = 0;
}
?>
<html>
<head>
<title>number</Title>
<style>
</style>
<body>
<form action = "numbers.php" method = "post">
Numbers: <input type "text" name = "number" size = "6"/>
<input type = "submit" value = "submit" name = "submit"/>
<p>
</form>
</body>
</head>
</Html>
<?php
if(isset($_POST["submit"]))
{
$number = $_POST['number'];
If (is_numeric($number))
{
$count = $_session['count'] + $number;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$count;
}
}
?>
我试图存储我的$count
变量,所以每次我提交它输出输入的数字的总和
你设置$_session['count'] = $count;
在你有一个名为$count
的变量之前。 在设置$count
之后,您必须更新会话值:
$count = $_session['count'] + $number;
$_session['count'] = $count;
然后,您可以使用以下命令替换脚本的顶部:
if(!isset($_session['count']))
{
$_session['count'] = 0;
}
<?php
if(isset($_POST["submit"]))
{
$number = $_POST['number'];
If (is_numeric($number))
{
$count = $_session['count'] + $number;
$_session['count'] = $count;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$count;
}
}
?>
一开始你使用未定义的变量$ count。 编辑为:
if(!isset($_session['count']))
$_session['count'] = 0;
然后添加一个新行:
If (is_numeric($number))
{
$count = $_SESSION['count'] + $number;
$_SESSION['count'] = $count;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$count;
}
或第二部分编辑为:
If (is_numeric($number))
{
$_SESSION['count'] += $number;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$_SESSION['count'];
}
这是工作示例。 [TESTED]
你必须分配$_SESSION['count']=$count;
<?php
session_start();
//Code commented as not required.
/*if(isset($_session['count']))
{
$_session['count'] = $count;
}else{
$_session['count'] = 0;
}
*/?>
<html>
<head>
<title>number</Title>
<style>
</style>
<body>
<form action = "" method = "post">
Numbers: <input type "text" name = "number" size = "6"/>
<input type = "submit" value = "submit" name = "submit"/>
<p>
</form>
</body>
</head>
</Html>
<?php
if(isset($_POST["submit"]))
{
$number = $_POST['number'];
if (is_numeric($number))
{
$count = $_SESSION['count'] + $number;
$_SESSION['count']=$count;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$count;
}
}
?>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.