Undefined Offset error when read a file into table - php

Question

I've got Undefined Offset error, but I don't know what's wrong.
Here's the code
<?php
$documentRoot = $_SERVER['DOCUMENT_ROOT'];
$fileName = "$documentRoot/Tutorials/PHP/Assignments/Assignment 3/data/quote.txt";
$filePointer = fopen($fileName, 'r');
$lineCounter = 0;
$display = "";
while(true)
{
$line = fgets($filePointer);
list($firstName, $lastName, $contactMethod, $phoneMail, $resideCity, $comments) = explode("|", $line);
if (!isset($comments))
{
$comments = "";
}
$lineCounter++;
if(feof($filePointer))
{
break;
}
if($lineCounter % 2 == 0)
{
$style = "style = 'background-color:white';";
}
else
{
$style = "style = 'background-color:lightgray';";
}
//Write to table
print"<tr $style>";
print"<td>$firstName</td>";
print"<td>$lastName</td>";
print"<td>$contactMethod</td>";
print"<td>$phoneMail</td>";
print"<td>$resideCity</td>";
print"<td>$comments</td>";
print"</tr>";
}
fclose($filePointer);
?>
I added:
if (!isset($comments))
{
$comments = "";
}
Because I assume the offset error appears because I didn't type in anything in comments. However, I still get this error.
Please help.
Here's the error message:
Notice: Undefined offset: 5 in /Users/Lio/Documents/Eligio's/Tutorials/PHP/Assignments/Assignment 3/quotes.php on line 32
Notice: Undefined offset: 4 in /Users/Lio/Documents/Eligio's/Tutorials/PHP/Assignments/Assignment 3/quotes.php on line 32
Notice: Undefined offset: 3 in /Users/Lio/Documents/Eligio's/Tutorials/PHP/Assignments/Assignment 3/quotes.php on line 32
Notice: Undefined offset: 2 in /Users/Lio/Documents/Eligio's/Tutorials/PHP/Assignments/Assignment 3/quotes.php on line 32
Notice: Undefined offset: 1 in /Users/Lio/Documents/Eligio's/Tutorials/PHP/Assignments/Assignment 3/quotes.php on line 32

Answer 1

The problem is before your isset... so when you do explode and pass results to list... that expects 6 parametes only receive 5 or less and you get the error.
I suggest the following replacement:
$line = fgets($filePointer);
$data=explode("|", $line);
while(count($data)<6) $data[]="";
list($firstName, $lastName, $contactMethod, $phoneMail,
$resideCity, $comments) = $data;
That will add enough data for list to set vars.
and should work!
Happy coding!