PHP 过滤页面中的BOM数据的简单实例

2. /**
3. * 过滤页面中bom
4. * edit bbs.it-home.org
5. */
6. function checkBOM ($filename) {
7. $contents = file_get_contents($filename);
8. $charset[1] = substr($contents, 0, 1);
9. $charset[2] = substr($contents, 1, 1);
10. $charset[3] = substr($contents, 2, 1);
11. if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) {
12. $rest = substr($contents, 3);
13. rewrite $rest;
14. }else{
15. 　return false;
16. }
17. }
18. ?>

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