PHP批量检测并去除文件BOM头代码实例

清除bom头的php脚本，放到网站根目录执行就可以了。

<?php
if (isset($_GET['dir'])) { //设置文件目录  
    $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)) {
                    echo "filename: $basedir/$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, $rest);
            return ("<font color='red'>BOM found, automatically removed.</font>");
        } else {
            return ("<font color='red'>BOM found.</font>");
        }
    } else
        return ("BOM Not Found.");
} 
 function rewrite($filename, $data)
{
    $filenum = fopen($filename, "w");
    flock($filenum, LOCK_EX);
    fwrite($filenum, $data);
    fclose($filenum);
}
?>

PHP批量检测并去除文件BOM头代码实例 由 以指代步 发布
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