如何使用PHP批量去除文件UTF8 BOM信息_PHP教程

php
// 设定你要清除BOM的根目录（会自动扫描所有子目录和文件）
$HOME = dirname(__FILE__);
// 如果是Windows系统，修改为：$WIN = 1;
$WIN = 0;
?>








$BOMBED = array();
RecursiveFolder($HOME);
echo '

These files had UTF8 BOM, but i cleaned them:

';
foreach ($BOMBED as $utf) { echo $utf ."
"; }
echo '

';
// 递归扫描
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;
     // 移出BOM信息
     $content = substr($content,3);
     // 写回到原始文件
     file_put_contents($sHOME . $win32 . $file, $content);
    }
   }
  }
 }
 $folder->close();
 if(count($foundfolders) > 0) {
  foreach ($foundfolders as $folder) {
   RecursiveFolder($folder, $win32);
  }
 }
}
// 搜索当前文件是否有BOM
function SearchBOM($string) {
  if(substr($string,0,3) == pack("CCC",0xef,0xbb,0xbf)) return true;
  return false;
}
?>