Question

我有两个脚本。一个名为index.php，另一个名称为home.php。

index.php用于登录（使用in_array验证用户名和密码），然后将用户重定向到home.php。这是index.php：

<?php
session_start();
?>

<html>
<head>
    <title>Log In</title>
</head>


<body><center>

    <form method="POST" action="index.php" ">
        <h2>Log In</h2>
        Username: <input type="text" id="uname" name="username" placeholder="Your Username" maxlength="20"/><br/>
        Password: <input type="password" id="pwd" name="password" placeholder="Your Password" maxlength="20"/><br/><br/>
        <input type="hidden" name="form_status" value="sent"/>
        <input type="submit" value="Log In"/>
    </form></center>

<?php

    $userdetails = array('james'=>'james123','john'=>'john123','stefan'=>'stefan123');

    if(isset($_POST['form_status']) && $_POST['form_status']=="sent"){
            $_SESSION['username'] = $_POST['username'];
            $_SESSION['password']= $_POST['password'];  


        if(isset($_SESSION['username'])){
            if(in_array($_SESSION['password'],$userdetails)){
                header("location: home.php");
            }
        }
        else {
            echo "Your password is incorrect";
        }


    }
?>
</body>
</html>

在第二个脚本（home.php）中，我已经存储了用户的资格和兴趣（在多维数组中），然后使用该数组显示home.php中登录用户的兴趣和资格。这是脚本：

<?php
    session_start();

    if(isset($_SESSION["username"])){

        $userdetails = array(
                        array("username"=>"james","qualification"=>"LLB from Harward.", "interests"=>"baseball, football and sports cars"),
                        array("username"=>"john","qualification"=>"Commerce.", "interests"=>"weight lifting, cars and cycling"),
                        array("username"=>"stefan","qualification"=>"MBBS.", "interests"=>"reading, photography and Gaming")
                        );              


            echo "Hello ". $_SESSION["username"];

                if($_SESSION['username']=="james"){
                    echo "<br/>Your qualification is ".$userdetails[0]['qualification'];
                    echo "<br/>Your interests are ".$userdetails[0]['interests'];
                    echo "<br/><a href='friends.php'>Your Friends</a><br/><a href='session_destroy.php'>Log Out</a><br/>";
                }

                if($_SESSION['username']=="john"){
                    echo "<br/>Your qualification is ".$userdetails[1]['qualification'];
                    echo "<br/>Your interests are ".$userdetails[1]['interests'];
                    echo "<br/><a href='friends.php'>Your Friends</a><br/><a href='session_destroy.php'>Log Out</a><br/>";
                }

                if($_SESSION['username']=="stefan"){
                    echo "<br/>Your qualification is ".$userdetails[2]['qualification'];
                    echo "<br/>Your interests are ".$userdetails[2]['interests'];
                    echo "<br/><a href='friends.php'>Your Friends</a><br/><a href='session_destroy.php'>Log Out</a><br/>";
                }



    }else{
        header("Location: index.php");
    }
?>

现在的问题是我必须使用if else if语句分别编写代码来分别显示每个用户的资格和兴趣。

Isnt是否可以使用单个（或几个语句）来向该用户显示特定用户的资格和兴趣？

PS。我知道建议为此目的使用数据库。我只是练习数组和if ifif语句。

Answer 1

为用户名使用键值数组：

$userdetails = array(
    "james" => array("username"=>"james","qualification"=>"LLB from Harward.", "interests"=>"baseball, football and sports cars"),
    "john" => array("username"=>"john","qualification"=>"Commerce.", "interests"=>"weight lifting, cars and cycling"),
    "stefan" => array("username"=>"stefan","qualification"=>"MBBS.", "interests"=>"reading, photography and Gaming")
);

然后你可以使用用户名作为密钥：

$details = $userdetails[$_SESSION['username']];
echo "<br/>Your qualification is ".$details['qualification'];
echo "<br/>Your interests are ".$details['interests'];
echo "<br/><a href='friends.php'>Your Friends</a><br/><a href='session_destroy.php'>Log Out</a><br/>";

Answer 2

您可以将foreach用于$userdetails

   foreach($userdetails  as $k=>$userdetail){

     if($_SESSION['username']==$k){
         echo "<br/>Your qualification is ".$userdetail['qualification'];
         echo "<br/>Your interests are ".$userdetail['interests'];
         echo "<br/><a href='friends.php'>Your Friends</a><br/><a href='session_destroy.php'>Log Out</a><br/>";
     }

  }

如何使用少量代码回显多维数组？

2 个答案: