<?php
// note that ctrl+M (in vim known as ^M) is hexadecimally 0x0D

// array of characters to convert
$trans = array("\x0D" => "");

// let's populate the a list of php files to process
$directory = "/var/www/html/php/dirname/";
$filelist = array();
if (!($filehandle = opendir($directory))) die("Cannot open $directory");
 { while($file = readdir($filehandle))
    { if (ereg("\.php", $file))
       { $trimmed = rtrim($file);
         $file_count = array_push ($filelist, $trimmed);
       }
    }
    closedir($filehandle);
    rsort($filelist);
  }

// now, let's loop through the file list, read the contents of each file
// into an array, convert the characters, and rewrite the file.
for ($a=0; $a<$file_count; $a++)
 { $filename = $directory . $filelist[$a];
   echo "processing $filename\n";
   $lines = file($filename);
   $handle = fopen($filename,"w");
   for ($b=0; $b<count($lines); $b++)
    { $newline = strtr($lines[$b],$trans);
      fwrite($handle,$newline);
    }
      fclose($handle);
  }
?>