PHP批量删除、清除UTF-8文件BOM头的代码实例

记得运行代码前先把文件备份一下哦，避免出现失败问题。

代码一：

  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>BOM found.</font>");
      }
    }
    else return ("BOM Not Found.");
  }

代码二：

':'只检测文件BOM不执行去除BOM操作
';

checkdir($basedir);
function checkdir($basedir){
  if($dh=opendir($basedir)){
    while (($file=readdir($dh)) !== false){
      if($file != '.' && $file != '..'){
 if(!is_dir($basedir.'/'.$file)){
   echo '文件: '.$basedir.'/'.$file .checkBOM($basedir.'/'.$file).' 
';
 }else{
   $dirname=$basedir.'/'.$file;
   checkdir($dirname);
 }
      }
    }
    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 (' 找到BOM并已自动去除');
    }else{
      return (' 找到BOM');
    }
  }else{
    return (' 没有找到BOM');
  }
}
function rewrite($filename,$data){
  $filenum=fopen($filename,'w');
  flock($filenum,LOCK_EX);
  fwrite($filenum,$data);
  fclose($filenum);
}
?>

代码三：

##把该文件放在需求去除BOM头的目录下跑一下却可。
";
 } else {
   $dirname = $basedir . "/" . $file; // 如果是目录
   checkdir ( $dirname ); // 递归
 }
      }
    }
    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 ( $charset [3] ) == 191) { // BOM
  // 的前三个字符的ASCII
  // 码分别为
  // 239
  // 187
  // 191
    if ($auto == 1) {
      $rest = substr ( $contents, 3 );
      rewrite ( $filename, $rest );
      return ("BOM found, automatically removed.");
    } else {
      return ("BOM found.");
    }
  } else
    return ("BOM Not Found.");
}
function rewrite($filename, $data) {
  $filenum = fopen ( $filename, "w" );
  flock ( $filenum, LOCK_EX );
  fwrite ( $filenum, $data );
  fclose ( $filenum );
}
?>

二、Python

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import os

def delBOM():
 file_count = 0
 bom_files = []

 for dirpath, dirnames, filenames in os.walk('.'):
 if(len(filenames)):
  for filename in filenames:
  file_count += 1
  file = open(dirpath + "/" + filename, 'r+')
  file_contents = file.read()

  if(len(file_contents) > 3):
   if(ord(file_contents[0]) == 239 and ord(file_contents[1]) == 187 and ord(file_contents[2]) == 191):
   bom_files.append(dirpath + "/" + filename)
   file.seek(0)
   file.write(file_contents[3:])
   print bom_files[-1], "BOM found. Deleted."
  file.close()

 print file_count, "file(s) found.", len(bom_files), "file(s) have a bom. Deleted."

if __name__ == "__main__":
 delBOM()

为了方便大家使用，这里考高分网小编分享一个BOM工具方便大家检测。

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