php bom removal tool, php batch removal of bom code_PHP tutorial

PHP has the function of removing file BOM codes in batches, and supports batch removal of folders. The specific php file code is as follows:

<?php
header('content-Type: text/html; charset=utf-8');
$auto=1;/*设置为1标示检测BOM并去除，设置为0标示只进行BOM检测，不去除*/
$basedir='.';
$loop=true;//www.phpernote.com
echo '当前查找的目录为：'.$basedir.'当前的设置是：';
echo '（1）',$loop?'检查当前目录以及当前目录的子目录':'只针对当前目录进行检测';
echo '（2）',$auto?'检测文件BOM同时去除检测到BOM文件的BOM<br />':'只检测文件BOM不执行去除BOM操作<br />';

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

Save the above code as a file with the suffix php and put it in the file directory where the bom needs to be removed, and then run the php file. The files in the directory and all subdirectories of the directory will be checked for bom and the bom will be removed. , the running result page is as follows:

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http://www.bkjia.com/PHPjc/764082.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/764082.htmlTechArticlePHP has the function of removing file BOM codes in batches and supports batch removal of folders. The specific php file code is as follows: ?phpheader('content-Type: text/html; charset=utf-8');$auto=1;/*Set to 1 to indicate...