本文实例讲述了PHP读取文件,解决中文乱码UTF-8的方法，分享给大家供大家参考，具体如下：

1. $opts = array(
2. 'file' => array(
3. 'encoding' => "utf-8"
4. )
5. );
6. $opts = array('http' => array('encoding' => 'utf-8'));
7. $ctxt = stream_context_create($opts);
8. $content = file_get_contents($filePath, FILE_TEXT, $ctxt);

最简单的就是将GF2312→UTF-8

$str = iconv("gb2312", "utf-8", $str);

不管用的

$content = mb_convert_encoding($content, "UTF-8", "auto");

******************************************丑陋的分割线来告诉大家上面的不好的：下面的才是正确的方法···哈哈···**********************************************************

1. define('UTF32_BIG_ENDIAN_BOM', chr(0x00) . chr(0x00) . chr(0xFE) . chr(0xFF));
2. define('UTF32_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE) . chr(0x00) . chr(0x00));
3. define('UTF16_BIG_ENDIAN_BOM', chr(0xFE) . chr(0xFF));
4. define('UTF16_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE));
5. define('UTF8_BOM', chr(0xEF) . chr(0xBB) . chr(0xBF));
6. $text = file_get_contents($newPath);
7. $first2 = substr($text, 0, 2);
8. $first3 = substr($text, 0, 3);
9. $first4 = substr($text, 0, 3);
10. $encodType = "";
11. if ($first3 == UTF8_BOM)
12. $encodType = 'UTF-8 BOM';
13. else if ($first4 == UTF32_BIG_ENDIAN_BOM)
14. $encodType = 'UTF-32BE';
15. else if ($first4 == UTF32_LITTLE_ENDIAN_BOM)
16. $encodType = 'UTF-32LE';
17. else if ($first2 == UTF16_BIG_ENDIAN_BOM)
18. $encodType = 'UTF-16BE';
19. else if ($first2 == UTF16_LITTLE_ENDIAN_BOM)
20. $encodType = 'UTF-16LE';
21. $content = file_get_contents($newPath);
22. $content = iconv($encodType, "utf-8", $content);

终极版·····

1. $text = file_get_contents($filePath);
2. //$encodType = mb_detect_encoding($text);
3. define('UTF32_BIG_ENDIAN_BOM', chr(0x00) . chr(0x00) . chr(0xFE) . chr(0xFF));
4. define('UTF32_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE) . chr(0x00) . chr(0x00));
5. define('UTF16_BIG_ENDIAN_BOM', chr(0xFE) . chr(0xFF));
6. define('UTF16_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE));
7. define('UTF8_BOM', chr(0xEF) . chr(0xBB) . chr(0xBF));
8. $first2 = substr($text, 0, 2);
9. $first3 = substr($text, 0, 3);
10. $first4 = substr($text, 0, 3);
11. $encodType = "";
12. if ($first3 == UTF8_BOM)
13. $encodType = 'UTF-8 BOM';
14. else if ($first4 == UTF32_BIG_ENDIAN_BOM)
15. $encodType = 'UTF-32BE';
16. else if ($first4 == UTF32_LITTLE_ENDIAN_BOM)
17. $encodType = 'UTF-32LE';
18. else if ($first2 == UTF16_BIG_ENDIAN_BOM)
19. $encodType = 'UTF-16BE';
20. else if ($first2 == UTF16_LITTLE_ENDIAN_BOM)
21. $encodType = 'UTF-16LE';
22. //下面的判断主要还是判断ANSI编码的·
23. if ($encodType == '') {//即默认创建的txt文本-ANSI编码的
24. $content = iconv("GBK", "UTF-8", $text);
25. } else if ($encodType == 'UTF-8 BOM') {//本来就是UTF-8不用转换
26. $content = $text;
27. } else {//其他的格式都转化为UTF-8就可以了
28. $content = iconv($encodType, "UTF-8", $text);
29. }

以上的终极版·可以适应中文操作windows系统建立的ANSI``````````````UTF-8`````````Unicode`````的txt文本。