修改PHP脚本以从CSV文件中读取

I have script which was reading two variable from CSV and those variable was at column 0 and column 5 and it was fine:

$file = fopen($qtyfile,"r");
output("reading file $qtyfile");

$i=0;
$imported = 0;
$failed = 0;
while(! feof($file))
{
  $i++;

  $line = (fgetcsv($file));

  if($i==1) continue;

  $cols = explode(';',$line[0]);


  $pcode = $cols[0];
  $stock = $cols[5];                  

The CSV file has been orginzed in different way, and the variable now at column 16 & 19 i tried to modify the code to the following but it's not working :

$file = fopen($qtyfile,"r");
output("reading file $qtyfile");

$i=0;
$imported = 0;
$failed = 0;
while(! feof($file))
{
  $i++;

  $line = (fgetcsv($file));

  if($i==1) continue;

  $cols = explode(';',$line[0]);


  $pcode = $cols[16];
  $stock = $cols[19];                  

can you please help to make the script ready from new column.

any help will be appreciated.

Link to full script and the csv:

Here's an awesome little function which will parse any csv file into an associative array with column titles from row 1 as array keys.

function csvArray($file) {
    $csv = array_map('str_getcsv', file($file));
    array_walk($csv, function(&$a) use ($csv) {
      $a = array_combine($csv[0], $a);
    });
    array_shift($csv);
return $csv;
}

Usage:

$output = csvArray($file);
foreach ($output as $o) {
echo $o['pcode'];
// whatever
}

I have to deal with quite a lot of csv files and I use this all the time. Once the data is in an array it's much easier to deal with, and it doesn't matter if columns get moved around as long as the name stays the same it won't break your code.