File Switch in Chat Application code correction_问答_开发者

File Switch in Chat Application code correction

开发者 https://www.devze.com 2023-02-25 03:55 出处：网络

What am I doing incorrectly in my code?Let me explain, I\'m trying to write a chat application for my school, and for users to freely switch between .txt databases, I made a simple form and If...Then

相关专题：php

What am I doing incorrectly in my code? Let me explain, I'm trying to write a chat application for my school, and for users to freely switch between .txt databases, I made a simple form and If...Then statement that switches $file = 'chatmsg.txt' to $file = 'indexmsg.txt'. I thought I had it correctly, but apparently not. What am I doing wrong? Thanks for your input.

if (isset($HTTP_GET_VARS['f1']))
{ 
    $f2 = file($file) ;
    echo("<html><head><title></title><meta http-equiv='Content-Type' content='text/html; charset=utf-8'></head>") ;
    echo("<body text=#0000cc><meta http-equiv='refresh' content='{$refresh}; url={$HTTP_SERVER_VARS['REQUEST_URI']}'>") ;
    echo("<font color=#e22200>Online Users: ") ;
    foreach($users as $u) echo "<font color=#ee0099>".$u."</font> - " ;
    echo "</font><hr>" ;
    for($i=0; isset($f2[$i]) && $i<$max; $i++) { 
        $e=explode("||", $f2[$i]) ;
        if ($e[2]!="\r\n") echo "<font color=green>{$e[0]}</font> <font color=red>:</font> {$e[2]}开发者_开发技巧<br>\r\n" ;
    }
    die("</body></html>") ;
}

else
{ 

$html = <<<EOA
        <html><head><title>KeyChat</title><meta http-equiv='Content-Type' content='text/html; charset=utf-8'>
        <script><!--
        function msg(){ document.m.msg.focus(); } // --></script>
        </head>
        <body align='center' onLoad='msg()'> <center>
        <iframe src='?f1=1' width='95%' height='70%'></iframe><br>
        <table width='95%'><tr><td align='center' width='100%'>
            <form action='' method='post' name='m'>
            Message : <input name='msg' size=60> <input type='submit' name='send' value='Send'>
            <br />
            </form>
        </td></tr></table>
        <h3>Welcome to KeyChat</h3>
<p><big>NOTICE: Please chat at home, not at school.  If you chat at school, do realize that you hold all responsibility for not taking seriously this notice.</p></big>
<form name="name" action="test.php?name=Aaron" method="post">
<input type="radio" name="name" value="Aaron" /> Aaron<br />
<input type="radio" name="name" value="Benjamin" /> Benjamin<br />
<input type="submit" value="Submit">
EOA;
die($html);
}

if(empty($_REQUEST["name"])) 
    echo "No POST variables" ; 
else
    $file = 'indexmsg.txt' ;

Looks to me like the problem is your use of die(), which does output text, but it also stops the execution of the script.

$file never gets a new value because you called die() before it. Change the two instances of die() to echo(), and it should work.