Home  >  Article  >  php教程  >  批量清除BOM头

批量清除BOM头

PHP中文网
PHP中文网Original
2016-05-23 17:09:401111browse

跳至

<?php  
//有些php文件由于不小心保存成了含bom头的格式而导致出现一系列的问题。以下是批量清除bom头的代码

if (isset ( $_GET [&#39;dir&#39;] )) { //config the basedir    
    $basedir = $_GET [&#39;dir&#39;];    
} else {    
    $basedir = &#39;.&#39;;    
}    
$basedir="./weibo/";
$auto = 1;    

checkdir ( $basedir );    

function checkdir($basedir) {    
    if ($dh = opendir ( $basedir )) {    
        while ( ($file = readdir ( $dh )) !== false ) {    
            if ($file != &#39;.&#39; && $file != &#39;..&#39;) {    
                if (! is_dir ( $basedir . "/" . $file )) { // 如果是文件    
                    echo "filename: $basedir/$file " . checkBOM ( "$basedir/$file" ) . " 
";    
                } 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 ("");    
        } else {    
            return ("");    
        }    
    } else    
        return ("BOM Not Found.");    
}    

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

                   

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn