A simple script to convert a directory of CSV files from tab delimited to pipe delimited

convert_csv.php

<?php
$dir=opendir('./');
while(($entry = readdir($dir)) !== false) {
  $fname = preg_split("/\./",$entry);
  if(strcasecmp($fname[1],"xls") !== 0) {
    continue;
  }
  $rows = file($fname[0].'.xls');
  $fp = fopen($fname[0].'.csv', 'w');
  foreach($rows as $row) {
    $data = str_replace("\t", "|", $row);
    fwrite($fp, $data);
  }
  fclose($fp);
}
?>