Multibyte String 函数
PHP Manual

mb_substr

(PHP 4 >= 4.0.6, PHP 5)

mb_substrGet part of string

说明

string mb_substr ( string $str , int $start [, int $length [, string $encoding ]] )

Performs a 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.

参数

str

The string being checked.

start

The first position used in str.

length

The maximum length of the returned string.

encoding

encoding 参数为字符编码。如果省略,则使用内部字符编码。

返回值

mb_substr() returns the portion of str specified by the start and length parameters.

参见


Multibyte String 函数
PHP Manual