Matt Wades News Tutorial part 2 - Need Help

<?php
$PHP_SELF = $_SERVER['PHP_SELF'];
if(isset($_GET["action"]))
	{
	  $action = $_GET["action"]; }
	else
	{
	$action = "";
}
if($action == "edit" && isset($_POST['password'])) {
    //obviously you should change this password on the next line
    if($_POST['password'] == "editpass") {
        //First let's recompile that line with the pipe symbols so we can reinsert it
        $line = $_POST['date'] . "|" . $_POST['name'];
        $line .= "|" . $_POST['news'];
        $line = str_replace("rn","<BR>",$line);
        $line .= "rn";
        $data = file('news.txt');
        $data[$id] = $line;
        //the next line makes sure the $data array starts at the beginning
        reset($data);
        //now we open the file with mode 'w' which truncates the file
        $fp = fopen('news.txt','w');
        foreach($data as $element) {
            fwrite($fp, $element);
        }
        fclose($fp);
        echo "Item Edited!<BR><BR>n";
        echo "<a href="$PHP_SELF">Go Back</a>n";
        exit;
    } else {
        echo "Bad password!n";
        exit;
    }
}
if($action == "edit") {
    $data = file('news.txt');
    $id = 0;
    $element = trim($data[$id]);
    $pieces = explode("|", $element);
    //the next line is to reverse the process of turning the end of lines into breaking returns
    $news = str_replace("<BR>","rn",$pieces[2]);
    echo "Make the changes you would like and press save.<BR>n";
    echo "<FORM ACTION="$PHP_SELF?action=edit" METHOD="POST" NAME="editform">n";
    echo "Name:<BR>n";
    echo "<INPUT TYPE="text" SIZE="30" NAME="name" value="".$pieces[1].""><BR>n";
    echo "The News:<BR>n";
    echo "<TEXTAREA NAME="news" COLS="40" ROWS="5">".$news."</TEXTAREA><BR><BR>n";
    echo "Password:<BR>n";
    echo "<INPUT TYPE="password" SIZE="30" NAME="password"><BR>n";
    echo "<INPUT TYPE="hidden" NAME="date" VALUE="".$pieces[0]."">n";
    echo "<INPUT TYPE="hidden" NAME="id" VALUE="$id">n";
    echo "<INPUT TYPE="submit" NAME="submit" VALUE="Save"><BR>n";
    echo "</FORM>n";
    $id++;
    exit;
}
if($action == "delete" && isset($_POST['password'])) {
    //obviously you should change this password on the next line
    if($_POST['password'] == "deletepass") {
        $data = file('news.txt');
        //this next line will remove the single news item from the array
		array_splice($data,$_GET['id'],1);
        //now we open the file with mode 'w' which truncates the file
        $fp = fopen('news.txt','w');
        foreach($data as $element) {
            fwrite($fp, $element);
        }
        fclose($fp);
        echo "Item deleted!<BR><BR>n";
        echo "<a href="$PHP_SELF">Go Back</a>n";
        exit;
    } else {
        echo "Bad password!n";
        exit;
    }
}
if($action == "delete") {
    echo "<H2>You are about to delete the following news item.</H2>n";
    $data = file('news.txt');
    $id = $_GET['id'];
	$element = trim($data[$id]);
    $pieces = explode("|", $element);
    echo $pieces[2] . "<BR>" . "<b>Posted by " . $pieces[1] . " on " . $pieces[0] . "</b>n";
    echo "<BR><BR>n";
    echo "Are you sure you want to delete this news item? If so, enter the password and click on Delete.<BR>n";
    echo "<FORM ACTION="$PHP_SELF?action=delete&id=$id" METHOD="POST" NAME="deleteform">n";
    echo "Password:<BR>n";
    echo "<INPUT TYPE="password" SIZE="30" NAME="password" value="ok"><BR>n";
    echo "<INPUT TYPE="hidden" NAME="id" VALUE="$id">n";
    echo "<INPUT TYPE="submit" NAME="delete""><BR>n";
    echo "</FORM>n";
    exit;
}
echo "<H1><u>Current News</u></H1>n";
$data = file('news.txt');
//next line removed to make everything else easier in the admin script
//$data = array_reverse($data);
$id = 0;
foreach($data as $id=>$element) {
    $element = trim($element);
    $pieces = explode("|", $element);
    echo $pieces[2] . "<BR>" . "<b>Posted by " . $pieces[1] . " on " . $pieces[0] . "</b>n";
    echo "&nbsp;<a href="$PHP_SELF?action=delete&id=$id">Delete</a>n";
    echo "&nbsp;<a href="$PHP_SELF?action=edit&id=$id">Edit</a>n";
    echo "<BR><BR>n";
    $id++;
}

echo "<HR>n";
echo "<H1><u>Add News</u></H1>n";
if(@$_POST['submit']) {
    if($_POST['password'] == 'pass') {
        if(!$_POST['name']) {
            echo "You must enter a name";
            exit;
        }
        if(!$_POST['news']) {
            echo "You must enter some news";
            exit;
        }
        if(strstr($_POST['name'],"|")) {
            echo "Name cannot contain the pipe symbol - |";
            exit;
        }
        if(strstr($_POST['news'],"|")) {
            echo "News cannot contain the pipe symbol - |";
            exit;
        }
        $fp = fopen('news.txt','a');
        if(!$fp) {
            echo "Error opening file!";
            exit;
        }
        $line = date("m.d.y") . "|" . $_POST['name'];
        $line .= "|" . $_POST['news'];
        $line = str_replace("rn","<BR>",$line);
        $line .= "rn";
        fwrite($fp, $line);
        if(!fclose($fp)) {
            echo "Error closing file!";
            exit;
        }
        echo "<b>News added!</b>n";
    } else {
        echo "Bad Password";
    }
}

?>
<FORM ACTION="<?php $PHP_SELF?>" METHOD="POST" NAME="newsentry">
Your name:<BR>
<INPUT TYPE="text" SIZE="30" NAME="name"><BR>
The News:<BR>
<TEXTAREA NAME="news" COLS="40" ROWS="5"></TEXTAREA><BR><BR>
News Password:<BR>
<INPUT TYPE="password" SIZE="30" NAME="password"><BR>
<INPUT TYPE="submit" NAME="submit" VALUE="Post it!"><BR>
</FORM>