CSV Reader in PHP

This CSV reader script I am pretty proud of. Its functional and outputs the csv as an organized grid with ascii separators.

$ csvreader.php example.csv

+------------+-----------+-------------+--------+---------------+---------------+-----------+-----------+-------------+
| First Name | Last Name | Nationality | Gender | Date of Birth | Time of Birth | Date/Time | PHP Coder | Sanity %Age |
+------------+-----------+-------------+--------+---------------+---------------+-----------+-----------+-------------+
| Mark       | Baker     | British     | M      | 19-Dec-1960   | 01:30         | =E2+F2    | TRUE      | 32%         |
+------------+-----------+-------------+--------+---------------+---------------+-----------+-----------+-------------+
| Toni       | Baker     | British     | F      | 24-Nov-1950   | 20:00         | =E3+F3    | FALSE     | 95%         |
+------------+-----------+-------------+--------+---------------+---------------+-----------+-----------+-------------+
| Rachel     | Baker     | British     | F      | 7-Dec-1982    | 00:15         | =E4+F4    | FALSE     | 100%        |
+------------+-----------+-------------+--------+---------------+---------------+-----------+-----------+-------------+

The Code

#!/usr/bin/php
<?php

try
{
    $file = $argv[1];
    if(!$file || !is_file($file))
    {
        throw new Exception('No file '.$file);
    }
    if(!is_readable($file))
    {
        throw new Exception('Not readable '.$file);
    }
}
catch(Exception $e)
{
    echo "ERROR: ".$e->getMessage()."\n";
    exit(1);
}

# get the CSV into an array
$totalWidth = 0;
$numColumns = 0;
$widths = array();
$lines = array();
$file = fopen($file, 'r');
$i = 0;
while (($line = fgetcsv($file)) !== FALSE)
{
    $lines[] = $line;

    foreach($line as $k => $field)
    {
        if($i == 0)
            $numColumns++;

        $len = strlen($field);
        if(!isset($widths[$k]))
        {
            $widths[$k] = $len;
        }
        elseif($widths[$k] < $len)
        {
            $widths[$k] = $len;
        }
    }

    $i++;
}
fclose($file);

# printer formats
$lpad = 1;
$rpad = 1;
$divider = "|";
$totalWidth = array_sum($widths);
$lineLength = $totalWidth + ($numColumns * $lpad) + ($numColumns * $rpad) + ($numColumns * strlen($divider)) + strlen($divider);

# meta data
#echo "number of rows = $i\n";
#echo "number of columns = $numColumns\n";

# top row
echo '+';
foreach($widths as $width)
{
    echo str_repeat("-", $width + $lpad + $rpad) . '+';
}
echo "\n";

# rows
#echo str_repeat("-", $lineLength)."\n";
foreach($lines as $line)
{
    # data
    echo $divider;
    foreach($line as $k => $field)
    {
        $colwidth = $widths[$k];
        echo str_repeat(' ', $lpad) . str_pad($field, $colwidth + $rpad) . $divider;
    }

    # divider row
    echo "\n+";
    foreach($widths as $width)
    {
        echo str_repeat("-", $width + $lpad + $rpad) . '+';
    }
    echo "\n";
    #echo "\n".str_repeat("-", $lineLength)."\n";
}