存儲變量會話php
[英]store variable session php
問題描述
嗨，我在理解會話是如何工作方面遇到了麻煩。 我正在嘗試編寫一個程序，它將重復請求輸入一個數字，每次輸入數字時，程序都要打印出來：
- 那個數字
- 輸入的所有數字的總和
- 我提交的次數
到目前為止這是我的代碼：
<?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: ".$count;
}
}
?>
我試圖存儲我的$count變量，所以每次我提交它輸出輸入的數字的總和
4 個解決方案
解決方案1
2 2013-08-30 12:20:25
你設置$_session['count'] = $count; 在你有一個名為$count的變量之前。 在設置$count之后，您必須更新會話值：
$count = $_session['count'] + $number;
$_session['count'] = $count;
然后，您可以使用以下命令替換腳本的頂部：
if(!isset($_session['count']))
{
$_session['count'] = 0;
}
解決方案2
0 2013-08-30 12:19:58
<?php
if(isset($_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: ".$count;
}
}
?>
解決方案3
0 已采納 2013-08-30 12:22:00
一開始你使用未定義的變量$ count。 編輯為：
if(!isset($_session['count']))
$_session['count'] = 0;
然后添加一個新行：
If (is_numeric($number))
{
$count = $_SESSION['count'] + $number;
$_SESSION['count'] = $count;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$count;
}
或第二部分編輯為：
If (is_numeric($number))
{
$_SESSION['count'] += $number;
print "Last number entered: ".$number;
print "<br>Total internal numbers: ".$_SESSION['count'];
}
解決方案4
0 2013-08-30 12:25:40
這是工作示例。 [TESTED]
你必須分配$_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;
}
}
?>
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