Javascript 无法从其他窗口读取会话数据

在test1.php上，我有以下内容：

<?php
    echo "Session variables are about to be set.";
    // Set session variables
    $_SESSION["animal"] = "cat";
    echo "Session variables are set.";
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

<div ms_positioning="text2D" class="style7"><a href="javascript:winOpen();" test2.php="">Contact Information</a></div>

<script>
function winOpen() {

    window.open("/test2.php",null,"scrollbars=no,resizable=no,width=600,height=300,top=100,left=100");

}
</script>

<?php
    // Echo session variables that were set on previous page
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

函数winOpen（）{
open（“/test2.php”，null，“滚动条=否，可调整大小=否，宽度=600，高度=300，顶部=100，左侧=100”）；
}

在test2.php中，我有以下内容：

<?php
    echo "Session variables are about to be set.";
    // Set session variables
    $_SESSION["animal"] = "cat";
    echo "Session variables are set.";
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

<div ms_positioning="text2D" class="style7"><a href="javascript:winOpen();" test2.php="">Contact Information</a></div>

<script>
function winOpen() {

    window.open("/test2.php",null,"scrollbars=no,resizable=no,width=600,height=300,top=100,left=100");

}
</script>

<?php
    // Echo session variables that were set on previous page
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

但是数据没有显示在test2.php上。它确实在test1.php上回响

有什么建议吗？

先输入代码

session_start（）

试试这个

<?php 
session_start();
// Echo session variables that were set on previous page
echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>


您需要打电话

session_start();

函数。test1.php应该如下所示：

<?php
    session_start(); // In case you come back to test1.php
    echo "Session variables are about to be set.";
    // Set session variables
    $_SESSION["animal"] = "cat";
    echo "Session variables are set.";
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

<div ms_positioning="text2D" class="style7"><a href="javascript:winOpen();" test2.php="">Contact Information</a></div>

<script>
function winOpen() {

    window.open("/test2.php",null,"scrollbars=no,resizable=no,width=600,height=300,top=100,left=100");

}
</script>

<?php
    session_start();
    // Echo session variables that were set on previous page
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>


函数winOpen（）{
open（“/test2.php”，null，“滚动条=否，可调整大小=否，宽度=600，高度=300，顶部=100，左侧=100”）；
}

test2.php应该是这样的：

<?php
    session_start(); // In case you come back to test1.php
    echo "Session variables are about to be set.";
    // Set session variables
    $_SESSION["animal"] = "cat";
    echo "Session variables are set.";
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

<div ms_positioning="text2D" class="style7"><a href="javascript:winOpen();" test2.php="">Contact Information</a></div>

<script>
function winOpen() {

    window.open("/test2.php",null,"scrollbars=no,resizable=no,width=600,height=300,top=100,left=100");

}
</script>

<?php
    session_start();
    // Echo session variables that were set on previous page
    echo "Favorite animal is " . $_SESSION["animal"] . ".";
?>

您是否在任何地方都启动了会话？不做