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我正在創建一個簡單的消息傳遞應用程序，用戶可以在其中登錄或註冊並與我完全通信。他們的用戶名和密碼存儲在一個.txt文件中（存儲每個人的密碼），並且我們的對話被逐行存儲在唯一的用戶名.txt中Html表格縮進
當用戶註冊或登錄時，我想將它們從表單重定向到單獨的文本區域，以顯示下面的對話。但是，當重定向用戶時，我不知道如何將他們的用戶名（usrNm）發送到下一個php文件，以顯示我們對話的內容（文件是他們的用戶名）。我試過包括（index.php）無濟於事。如何在不傳遞html的情況下包含index.php。什麼是最好的方法來做到這一點？
我也搞不清楚使用'' VS ""的一般規律，相信""允許變量是內''作品一切？我也被告知在html <input type="text" ..文本應該在引號中，如果它沒有引號的工作有什麼好處？如果你想開導我，另一個小問題是在第30行。所有建議非常感謝！
//index.php
<?php
echo "Login or register. ";
//Ensures form exists and instantiates neccesary variables
if (isset($_POST['usrNm'],$_POST['pass'],$_POST['passConf'])) {
$usrNm = $_POST['usrNm'];
$pass = $_POST['pass'];
$passConf = $_POST['passConf'];
$rec = file('userPass.txt');
//Parses username from users txt file
function usrName($indx){
global $rec;
$usrName = substr($rec[$indx], 0, stripos($rec[$indx], ' '));
return $usrName;
}
//Parses password from users txt file
function passWrd($indx){
global $rec;
$passWrd = trim(substr($rec[$indx], stripos($rec[$indx], ' ')));
return $passWrd;
}
//Attempts to log user in
if(!empty($usrNm)&&!empty($pass)&&empty($passConf)) {
for($i=0;$i<count($rec);$i++) {
//Logs user in
if (($usrNm==usrName($i))&&($pass==passWrd($i))) {
//Outputs admin screen
if ($usrNm=='rich') {
for ($x=1; $x<count($rec); $x++) {
//How to evaluate usrName($x) between link tags?
$usrNameLink = usrName($x);
echo "<a href='$com.php'>$usrNameLink</a> ";
}
break;
}
else header('Location: com.php');
}
//Wrong password
elseif (($usrNm==usrName($i))&&($pass!=passWrd($i))) {
echo 'Wrong password.';
break;
}
//Username doesn't exist
elseif (($i==count($rec)-1)&&($usrNm!=usrName($i))) {
echo 'Username doesn\'t exist.';
}
}
}
//Attempts to register user.
elseif (!empty($usrNm)&&!empty($pass)&&!empty($passConf)) {
for($i=0;$i<count($rec);$i++) {
//Username taken
if ($usrNm==usrName($i)) {
echo 'Username taken.';
break;
}
//Registers user: updates user txt file and creates txt file that saves correspondence between the user and me
elseif (($i==count($rec)-1)&&($usrNm!=usrName($i))&&($pass==$passConf)) {
$handle = fopen('userPass.txt', 'a');
$handle2 = fopen("$usrNm.txt", 'a');
fwrite($handle, $usrNm.' '.$pass."\r\n");
fwrite($handle2, 'Richard: Here you can send me messages.');
fclose($handle);
fclose($handle2);
header('Location: com.php');
}
//Passwords don't match
elseif (($i==count($rec)-1)&&($usrNm!=usrName($i))&&($pass!=$passConf)) {
echo 'Passwords don\'t match.';
}
}
}
//User didn't fill in the password field
else{echo 'Fill in the required fields.';}
}
?>
<form action="index.php" method="post">
Username:<input name="usrNm" type="text"></input><br>
Password:<input name="pass" type="password"></input><br>
Confirm Password (only for registration):<input name="passConf" type="password"></input><br>
<input name="submit" type="submit"></input>
</form>
//com.php
<?php
include('index.php');
if (isset($_POST['msg'])) {
if (!empty($_POST['msg'])) {
echo $usrNm;
}
}
?>
Welcome!
<form action="com.php" method="post">
<textarea name="msg" cols="64" rows="4" type="text"></textarea><br>
<input name="send" type="submit"></input>
</form>
非常感謝！我會開始工作。 – user1656125
如果此答案符合要求，請點擊向下箭頭中勾選的複選標記以接受它。 – Daedalus