Finds the BOM character in a given directory. Run in command line as a user with ability to edit the files

findbom.php

<?php
// From: https://stackoverflow.com/a/9773452/6001

// Tell me the root folder path.
// You can also try this one
// $HOME = $_SERVER["DOCUMENT_ROOT"];
// Or this
// dirname(__FILE__)

// This uses a ton of memory if you have lots of files.
ini_set('memory_limit', '2G');

$HOME = dirname(__FILE__);

// Is this a Windows host ? If it is, change this line to $WIN = 1;
$WIN = 0;

// That's all I need

$BOMBED = array();
RecursiveFolder($HOME);
echo "These files had UTF8 BOM, but i cleaned them:\n";
foreach ($BOMBED as $utf) { echo $utf ."\n"; }

// Recursive finder
function RecursiveFolder($sHOME) {
    global $BOMBED, $WIN;

    $win32 = ($WIN == 1) ? "\\" : "/";

    $folder = dir($sHOME);

    $foundfolders = array();
    while ($file = $folder->read()) {
        if($file != "." and $file != "..") {
            if(filetype($sHOME . $win32 . $file) == "dir"){
                $foundfolders[count($foundfolders)] = $sHOME . $win32 . $file;
            } else {
                $content = file_get_contents($sHOME . $win32 . $file);
                $BOM = SearchBOM($content);
                if ($BOM) {
                    $BOMBED[count($BOMBED)] = $sHOME . $win32 . $file;

                    // Remove first three chars from the file
                    $content = substr($content,3);
                    // Write to file
                    file_put_contents($sHOME . $win32 . $file, $content);
                }
            }
        }
    }
    $folder->close();

    if(count($foundfolders) > 0) {
        foreach ($foundfolders as $folder) {
            RecursiveFolder($folder, $win32);
        }
    }
}

// Searching for BOM in files
function SearchBOM($string) {
    if(substr($string,0,3) == pack("CCC",0xef,0xbb,0xbf)) return true;
    return false;
}