UC知道求解以下的东东!
来源：百度知道 编辑：UC知道 时间：2024/06/27 16:02:02
mb_substr
(PHP 4 >= 4.0.6, PHP 5)
mb_substr -- Get part of string
Description
string mb_substr ( string str, int start [, int length [, string encoding]] )
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.
(PHP 4 >= 4.0.6, PHP 5)
mb_substr -- Get part of string
Description
string mb_substr ( string str, int start [, int length [, string encoding]] )
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.
这是PHP的一个提取字符串的函数。
string mb_substr ( string str, int start [, int length [, string encoding]] )
str是源字符串，start是开始位置，可选的length是要提取字符串的长度，可选的encoding是编码方式。
函数返回提取的字符串。
不认识