会话变量有什么问题
What is wrong with the session variables
我不知道我的代码中的会话变量有什么问题...这是一个片段:
文件 1:
display_test();
function display_test(){
if(isset($_SESSION['testing']['testing'])) echo $_SESSION['testing']['testing'];
echo "<br><br><br><form id=\"current_juices_form\" method=\"post\" action=\"file2.php\">
<input type=\"submit\" />
</form>";
}
文件 2(也提交了上述表格的文件):
testing();
function testing(){
unset($_SESSION);
$_SESSION['testing']['testing'] = "<br>testing<br>";
header("Location: file1.php");
}
出于某种原因,当 file2 完成处理 post 操作后重定向回 file1 时,它没有打印出会话变量 $_SESSION['testing']['testing'].. .这是怎么回事???
您需要先初始化 $_SESSION['testing']。
function testing(){
if (!isset($_SESSION['testing'])) {
$_SESSION['testing'] = Array();
}
$_SESSION['testing']['testing'] = "<br>testing<br>";
header("Location: file1.php");
}
或者您也可以这样做:
function testing(){
$_SESSION['testing'] = Array('testing' => "<br>testing<br>");
header("Location: file1.php");
}
我不知道我的代码中的会话变量有什么问题...这是一个片段:
文件 1:
display_test();
function display_test(){
if(isset($_SESSION['testing']['testing'])) echo $_SESSION['testing']['testing'];
echo "<br><br><br><form id=\"current_juices_form\" method=\"post\" action=\"file2.php\">
<input type=\"submit\" />
</form>";
}
文件 2(也提交了上述表格的文件):
testing();
function testing(){
unset($_SESSION);
$_SESSION['testing']['testing'] = "<br>testing<br>";
header("Location: file1.php");
}
出于某种原因,当 file2 完成处理 post 操作后重定向回 file1 时,它没有打印出会话变量 $_SESSION['testing']['testing'].. .这是怎么回事???
您需要先初始化 $_SESSION['testing']。
function testing(){
if (!isset($_SESSION['testing'])) {
$_SESSION['testing'] = Array();
}
$_SESSION['testing']['testing'] = "<br>testing<br>";
header("Location: file1.php");
}
或者您也可以这样做:
function testing(){
$_SESSION['testing'] = Array('testing' => "<br>testing<br>");
header("Location: file1.php");
}