php - 如何访问另一个页面上的mysql变量值

Question

我是 php 新手，想问一下如何访问另一个页面上的变量。 我的代码:

<?php
    $username = "ADMIN";
    $host = "localhost";
    $password = "ADMIN";
    $database = "USER";
    $sname =  $_POST['signupname'];
    $susername =  $_POST['susername'];
    $spassword =  $_POST['spassword'];
    $gender =  $_POST['gender'];
    $con = mysqli_connect($host, $username, $password, $database);
    if(isset($_POST["signup"])) {
    mysqli_query($con, "INSERT INTO `USER`.`INFO` (`UID`, `NAME`, `USERNAME`, `PASSWORD`, `GENDER`, `BDAY`, `BMONTH`, `BYEAR`, `STATUS`, `LAST-ACTIVE`) VALUES (NULL, '$sname', '$susername', '$spassword', '$gender', '', '', '', '', NULL);");
    echo "<script type='text/javascript'>window.location.replace('../SSTEPS1010101/birthdaycheck1010101.php');</script>";
    }
?>

以及其他页面代码:-

<?php
    require '../SIGNUP/connects1010101.php';
    $bday = $_POST["bday"];
    $bmonth = $_POST["bmonth"];
    $byear = $_POST["byear"];
    if (isset($_POST["snext"])) {
    mysqli_query($con, "UPDATE `USER`.`INFO` SET `BDAY` = '$bday', `BMONTH` = '$bmonth', `BYEAR` = '$byear' WHERE `info`.`USERNAME` = '$susername;'");
    }
    echo "$susername";
?>

如何在其他页面访问$susername？ 我正在使用 $_SESSIONS["susername"];并在第一页上回显它并且它正在工作，但在另一页上 $_SESSIONS["susername"];不工作。

Answer 1

1.Use Session:

Fisrt.php

session_start();
 $username = "Max";
$username=$_SESSION['username'];
echo $username; //Output: Max

在另一个页面中使用

session_start();
echo $_SESSION['username']; //Output: Max

2. include

可以，但是最后一个包含中的变量将覆盖第一个包含中的变量:

myfirstfile.php

$name = 'max';

mysecondfile.php

$city = 'xyz';

test.php

include 'myfirstfile.php';
echo $name;

include 'mysecondfile.php';
echo $city;

输出:

max

xyz