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PHP & MySQL Tagboard

PHP & MySQL Tagboard

HTML for tagboard: 
<iframe src='view.php' border='0' name='tagboard'></iframe><br> 
<form action='post.php' method='post' target='tagboard'> 
<input type='text' name='name' value='name'><br> 
<input type='text' name='http' value='http://'><br> 
<input type='text' name='msg' value='message'><br> 
<input type='submit' value='Submit'> <input type='reset' value='Reset'> 
</form> 

--post.php-- 
<?php 
#change localhost to the sql server, user to the correct username, and pass to the correct password 
$con = mysql_connect("localhost","user","pass") or die("Unable to establish a connection to the database."); 

#change database to the database name 
$database = "database"; 
$db = mysql_select_db("$database") or die("Couldn't select database $database."); 

#lets strip some chars and slashes 
$name = stripslashes($name); 
$name = htmlspecialchars($name); 
$http = stripslashes($http); 
$http = htmlspecialchars($http); 
$msg = stripslashes($msg); 
$msg = htmlspecialchars($msg); 

$query = "INSERT INTO tagboard(name,http,msg) 
VALUES('$name,$http,$msg')"; 

$result = mysql_query($query) or die("Data couldn't be entered into the database."); 

echo "Click <a href='view.php'>here</a>."; 
?> 

--view.php-- 
<?php 
#change localhost to the sql server, user to the correct username, and pass to the correct password 
$con = mysql_connect("localhost","user","pass") or die("Unable to establish a connection to the database."); 

#change database to the database name 
$database = "database"; 
$db = mysql_select_db("$database") or die("Couldn't select database $database."); 

$query = "SELECT id,name,http,msg FROM tagboard ORDER BY id DESC"; selects all the rows from the table tagboard and orders them in descending order 

$result = mysql_query($query); 
while ($rows = mysql_fetch_row($result))//a loop 
{ 
echo "<a href='$row[http]' target='_blank'>$row[name]</a>: $row[msg]<br>"; 
} 
?> 

--admin.php-- 
<?php 
/*$PHP_AUTH_USER != 'user' is the username setting & $PHP_AUTH=PW !='open' is the password setting*/ 

if ( ( !isset( $PHP_AUTH_USER )) || (!isset($PHP_AUTH_PW))   
     || ( $PHP_AUTH_USER != 'user' ) || ( $PHP_AUTH_PW != 'open' ) ) { 

//name of the realm or protected area. 
    header( 'WWW-Authenticate: Basic realm="Tagboard Administration"' ); 

    header( 'HTTP/1.0 401 Unauthorized' ); 

/*when authorization fails*/ 
    echo "Authorization Required."; 
    exit; 

} 
else { 
/*Function used to connect to sql server and choose database*/ 
function connect(){ 
#change localhost to the sql server, user to the correct username, and pass to the correct password 
$con = mysql_connect("localhost","user","pass") or die("Unable to establish a connection to the database."); 

#change database to the database name 
$database = "database"; 

$db = mysql_select_db("$database") or die("Couldn't select database $database."); 
} 
echo "Tagboard Administration <br> <a href='admin.php?action=view'>View messages 
</a> <a href='admin.php?action=delall'>Delete all messages</a> <a href='admin.php?action=update'><br><br>"; 
     if($action == "view"){ 
connect(); 
$query = "SELECT id,name,http,msg FROM tagboard ORDER BY id DESC"; 
$result = mysql_query($query); 
while ($rows = mysql_fetch_row($result)){ 
echo "<a href='$row[http]' target='_blank'>$row[name]</a>: $row[msg] : <a href='admin.php?action=del&id=$row[id]'>Delete</a><br>"; 
      } 
   } 
     if($action == "del"){ 
connect(); 
$query = "DELETE FROM tagboard WHERE id='$id'"; 
$result = mysql_query($query); 
} 
     if($action == "delall"){ 
connect(); 
$query = "DELETE FROM tagboard"; 
$result = mysql_query($query); 
} 
     if($action == "update"){ 
connect(); 
$query = "SELECT id,name,http,msg FROM tagboard ORDER BY id DESC"; 
$result = mysql_query($query); 
while ($rows = mysql_fetch_row($result)){ 
echo "<a href='$row[http]' target='_blank'>$row[name]</a>: $row[msg] : ID#: $row[id]<br>"; 
} 
echo "<br> 
<form action='admin.php?action=update&go=yes' method='post'> 
<input type='text' name='id' value='ID #'><br> 
<input type='text' name='name' value='Name'><br> 
<input type='text' name='http' value='http://'><br> 
<textarea name='msg'>Message</textarea><br> 
<input type='submit' value='Submit'> <input type='reset' value='Reset'> 
</form>"; 
} 
if($go == "yes"){ 
connect(); 
$id = stripslashes($id); 
$id = htmlspecialchars($id); 
$name = stripslashes($name); 
$name = htmlspecialchars($name); 
$http = stripslashes($http); 
$http = htmlspecialchars($http); 
$msg = stripslashes($msg); 
$msg = htmlspecialchars($msg); 

$query = "UPDATE tagbard WHERE id='$id' SET name='$name' http='$http' msg='$msg'"; 
$result = mysql_query($query); 
echo "ID # $id has been edited successfully."; 
} 
} 
?> 

--sql syntax-- 
CREATE TABLE tagboard (id TINYINT (4) not null AUTO_INCREMENT, name VARCHAR (32), msg VARCHAR (50), http VARCHAR (32) , PRIMARY KEY (id))
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