使用php清除bom示例
核心代码
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.");
}
php清除莫明输出大法,用于输出图片前把前面所有输出清空
只要在header前连用两个函数，就可以解决...
ob_get_clean();
ob_clean();
header("Content-type: image/jpeg");
附几个好用的BOM检测工具：
BOM检测.zip
