PHP批量刪除、清除UTF-8文件BOM頭的代碼實(shí)例

更新時(shí)間：2014年04月14日 08:53:41 投稿：junjie

這篇文章主要介紹了PHP批量刪除、清除UTF-8文件BOM頭的代碼實(shí)例,需要的朋友可以參考下

記得運(yùn)行代碼前先把文件備份一下哦，避免出現(xiàn)失敗問(wèn)題。

代碼一：

  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($charset[1]) == 239 &amp;&amp; ord($charset[2]) == 187 &amp;&amp; ord($charset[3]) == 191) {
      if ($auto == 1) {
        $rest = substr($contents, 3);
        rewrite ($filename, $rest);
        return ("&lt;font color=red&gt;BOM found, automatically removed.&lt;/font&gt;");
      } else {
        return ("&lt;font color=red&gt;BOM found.&lt;/font&gt;");
      }
    }
    else return ("BOM Not Found.");
  }

代碼二：

<?php
header('content-Type: text/html; charset=utf-8');
if(isset($_GET['dir'])){ //設(shè)置文件目錄，如果沒(méi)有設(shè)置，則自動(dòng)設(shè)置為當(dāng)前文件所在目錄
  $basedir=$_GET['dir'];
}else{
  $basedir='.';
}
$auto=1;/*設(shè)置為1標(biāo)示檢測(cè)BOM并去除，設(shè)置為0標(biāo)示只進(jìn)行BOM檢測(cè)，不去除*/

echo '當(dāng)前查找的目錄為：'.$basedir.'當(dāng)前的設(shè)置是：';
echo $auto?'檢測(cè)文件BOM同時(shí)去除檢測(cè)到BOM文件的BOM<br />':'只檢測(cè)文件BOM不執(zhí)行去除BOM操作<br />';

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).' <br>';
        }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 (' <font color=red>找到BOM并已自動(dòng)去除</font>');
    }else{
      return (' <font color=red>找到BOM</font>');
    }
  }else{
    return (' 沒(méi)有找到BOM');
  }
}
function rewrite($filename,$data){
  $filenum=fopen($filename,'w');
  flock($filenum,LOCK_EX);
  fwrite($filenum,$data);
  fclose($filenum);
}
?>

代碼三：

##把該文件放在需求去除BOM頭的目錄下跑一下卻可。
<?php
if (isset ( $_GET ['dir'] )) { // config the basedir
  $basedir = $_GET ['dir'];
} else {
  $basedir = '.';
}

$auto = 1;

checkdir ( $basedir );
function checkdir($basedir) {
  if ($dh = opendir ( $basedir )) {
    while ( ($file = readdir ( $dh )) !== false ) {
      if ($file != '.' && $file != '..') {
        if (! is_dir ( $basedir . "/" . $file )) { // 如果是文件
          echo "filename: $basedir/$file " . checkBOM ( "$basedir/$file" ) . " <br>";
        } else {
          $dirname = $basedir . "/" . $file; // 如果是目錄
          checkdir ( $dirname ); // 遞歸
        }
      }
    }
    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 ( $charset [3] ) == 191) { // BOM
                                                   // 的前三個(gè)字符的ASCII
                                                   // 碼分別為
                                                   // 239
                                                   // 187
                                                   // 191
    if ($auto == 1) {
      $rest = substr ( $contents, 3 );
      rewrite ( $filename, $rest );
      return ("<font color=red>BOM found, automatically removed.</font>");
    } else {
      return ("<font color=red>BOM found.</font>");
    }
  } else
    return ("BOM Not Found.");
}
function rewrite($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) &gt; 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()

為了方便大家使用，這里腳本之家小編分享一個(gè)BOM工具方便大家檢測(cè)。

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