ob_start();

ob_get_clean();

find ./syscore -type f -name "*.php" -exec sed -i '1s/^\xef\xbb\xbf//' {}  \;

<?
//此文件用于快速测试UTF8编码的文件是不是加了BOM，并可自动移除
//By Bob Shen

$basedir="./paper/tech/trunk/message"; //修改此行为需要检测的目录，点表示当前目录
$auto=0; //是否自动移除发现的BOM信息。1为是，0为否。

//以下不用改动

if ($dh = opendir($basedir)) {
while (($file = readdir($dh)) !== false) {
if ($file!='.' && $file!='..' && !is_dir($basedir."/".$file)) echo "filename: $file ".checkBOM("$basedir/$file")." <br>";
}
closedir($dh);
}

function checkBOM ($filename) {
global $auto;
$contents=file_get_contents($filename);
$charset[1]=substr($contents, 0, 1);
$charset[2]=substr($contents, 1, 1);
$charset[3]=substr($contents, 2, 1);
if (ord($charset[1])==239 && ord($charset[2])==187 && ord($charset[3])==191) {
if ($auto==1) {
$rest=substr($contents, 3);
rewrite ($filename, $rest);
return ("<font color=red>BOM found, automatically removed.</font>");
} else {
return ("<font color=red>包含BOM</font>");
}
}
else return ("未发现BOM");
}

function rewrite ($filename, $data) {
$filenum=fopen($filename,"w");
flock($filenum,LOCK_EX);
fwrite($filenum,$data);
fclose($filenum);
}
?>

<?php  
  /*
  
  查找一个目录里面的UTF-8 Born 头

  用法
    /opt/bin/php GetUtf8Born.php {dir}

  例如
    /opt/bin/php GetUtf8Born.php /opt/www/

  */

  $is_fix_file = 1; //定义是否修复文件 1 为不修复 2 为修复
  
  
  $d = $_SERVER['argv'][1];

  if (!is_dir($d)) exit("Not Dir\n");

  $shell = "/usr/bin/find $d -type f";

  $r = exec($shell, $s_r);

  if(!empty($s_r))
  {
    foreach($s_r as $file)
    {
      if(GetBorn($file))
      {
        echo $file . "\n";

        if($is_fix_file == 2)
        {
          FixBorn($file);
        }
      }
    }
  }
  
  
  exit;

  function FixBorn($file)
  {
    if(!is_file($file))
    {
      return false;
    }
    
    $file_base_name = basename($file);
    
    $file_path = dirname($file);

    $r = ReadF($file, $file_string);

    if(!$r)
    {
      return false;
    }

    //Utf-8 头占用3个字符占位 去掉即可
    $new_string = substr($file_string, 3);

    //开始备份文件
    if (!copy($file, $file_path . "/Utf8Bom_" . $file_base_name))
    {
      return false;
    }

    // 写入新文件
    if(!WriteF($file, $new_string))
    {
      return false;
    }

    return true;

  }
  
  function ReadF($file, &$string)
  {
    $fp = fopen($file, "r");

    if(!$fp)
    {
      return false;
    }
    
    while (!feof ($fp))
    {
      $string  .= fgets($fp, 1024);
    }
  
    fclose($fp);

    return true;
  }

  function WriteF($file, $string)
  {
    $fp = fopen($file, "w+");

    if(!$fp || !is_writable($file))
    {
      return false;
    }
    
    if (!fwrite($fp, $string))
    {
      return false;
    }
  
    fclose($fp);

    return true;

  }
  
  function GetBorn($file)
  {
    if(!is_file($file))
    {
      return false;
    }

    $fp = fopen($file, "r");

    $s = fgets($fp, 64);
    
    fclose($fp);

    $s = trim(bin2hex($s));
    
    //if (strpos($s, "efbbbf") !== false)

    if (substr($s, 0, 6) == "efbbbf")
    {
      return true;
    }

    return false;
  }
?>

<?php

$aa = headers_sent();
var_dump($aa);


session_start();
if (isset($_SESSION['test_sess'])){
     $_SESSION['test_sess']++;
}else{

     $_SESSION['test_sess'] = 0;
}
echo $_SESSION['test_sess'];
?>;