PHP切割字符串（.txt)乱码mb_substr()…
这绝对是个好东西，mb_substr()…mb_strlen()...用在对utf8、wap网站，txt文档的分割、分页处理，而且速度非常的快……php开源
Description
string mb_substr ( string str, int start [, int length [, string encoding]] )php开源
mb_substr() returns the portion of str specified by the start and length parameters.
mb_substr() performs multi-byte safe substr() operation based on number of characters. Position is counted from the beginning of str. First character's position is 0. Second character position is 1, and so on.
If encoding is omitted, internal encoding is assumed.
encoding is character encoding. If it is omitted, internal character encoding is used.
Descriptionphp开源
int mb_strlen ( string str [, string encoding] )
mb_strlen() returns number of characters in string str having character encoding encoding. A multi-byte character is counted as 1.
encoding is character encoding for str. If encoding is omitted, internal character encoding is used.
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