News Script Tutorial Questions

Original - php Code <? // This is a script to check registered users against a flat-file database // It is modified from Matt's tutorial of a // News Posting Script from http://www.codewalkers.com // Check to see if the "Submit" button was set if(isset($submit)): // Put the password submitted by the user into an md5() Hash $pass = md5($password); // Put the submitted values (name and password) into an array $user_sub = array($name,$pass); // Load the userdatabase file into an array for processing $check = file('userdata.dat'); // Reverse the array to check the latest entries first $data = array_reverse($check); // Evaluate each line of the user database array as a specific content foreach($check as $element) { // Trim spaces from the contents $element = trim($element); // Break apart the values in the userdatabase that are // separated by the pipe symbol and load these into an array $user_info = explode("|", $element); // Check if values of the userdatabase array and the // user submitted array are the same if($user_info == $user_sub): // Stop the foreach loop break; // Print out the results echo "<br>There is a match in the user database."; else: echo "You are not in the database."; // Finish checking the values of both arrays endif; } else: echo "Please enter your username and password<br>"; endif; ?> <form action="<?=$PHP_SELF?>" method="post" name="check"> Name: <input type="text" size="20" name="name"><br> Password: <input type="password" size="20" name="password"><br> <input type="submit" name="submit" value="Submit"> </form>

<?
// This is a script to check registered users against a flat-file database
// It is modified from Matt's tutorial of a 
// News Posting Script from http://www.codewalkers.com
 
// Check to see if the "Submit" button was set
if(isset($submit)):
    
    // Put the password submitted by the user into an md5() Hash
    $pass = md5($password);
    
    // Put the submitted values (name and password) into an array
    $user_sub = array($name,$pass);
 
    // Load the userdatabase file into an array for processing
    $check = file('userdata.dat');
    
    // Reverse the array to check the latest entries first
    $data = array_reverse($check);
    
    // Evaluate each line of the user database array as a specific content
    foreach($check as $element) {
    
        // Trim spaces from the contents
            $element = trim($element);
                
        // Break apart the values in the userdatabase that are 
        // separated by the pipe symbol and load these into an array
     $user_info = explode("|", $element);
      
        // Check if values of the userdatabase array and the 
        // user submitted array are the same
        if($user_info == $user_sub):
                
            // Stop the foreach loop 
            break;
                
            // Print out the results
            echo "<br>There is a match in the user database.";
        else:
            echo "You are not in the database.";
                
        // Finish checking the values of both arrays
        endif;
        }
else:
echo "Please enter your username and password<br>";
endif;      
?>
<form action="<?=$PHP_SELF?>" method="post" name="check">
Name: <input type="text" size="20" name="name"><br>
Password: <input type="password" size="20" name="password"><br>
<input type="submit" name="submit" value="Submit">
</form> 

Original - php Code <? $name = "username"; $password = "password"; $pass = md5($password); $user_sub = array($name,$pass); $check = file('userdata.dat'); $data = array_reverse($check); foreach($check as $element) { $element = trim($element); $user_info = explode("|", $element); // Check if values are the same if($user_info = $user_sub): } $fp = fopen('news.txt','a'); if(!$fp) { echo "Error opening file!"; exit; } $line = date("D F d, Y @ h:ia") . "|" . $name; $line .= "|" . $news; $line = str_replace("rn","<BR>",$line); $line .= "rn"; fwrite($fp, $line); if(!fclose($fp)) { echo "Error closing file!"; exit; } else: echo "You are not in the database."; endif; ?>

 
<?
    $name = "username";
    $password = "password";
    $pass = md5($password);
    $user_sub = array($name,$pass);
 
    $check = file('userdata.dat');
    $data = array_reverse($check);
    foreach($check as $element) {
            $element = trim($element);
     $user_info = explode("|", $element);
        // Check if values are the same
        if($user_info = $user_sub):
        }
                $fp = fopen('news.txt','a');
                if(!$fp) {
                        echo "Error opening file!";
                        exit;
                }
                $line = date("D F d, Y @ h:ia") . "|" . $name;
                $line .= "|" . $news;
                $line = str_replace("rn","<BR>",$line);
                $line .= "rn";
                fwrite($fp, $line);
                if(!fclose($fp)) {
                        echo "Error closing file!";
                        exit;
            }
            else:
                echo "You are not in the database.";
            endif;      
?>