Chinese interception function mb_substr () in php _ PHP Tutorial

The description of the Chinese truncation function mb_substr () in php. Because the Chinese character is two bytes, it cannot use substr () in the same way as the English and numbers. Fortunately, there is a mb_substr () function in php to solve this problem, if you need it, check it out. Because the Chinese character is two bytes, it cannot use substr () in the same way as the English and numbers. Fortunately, there is a mb_substr () function in php to solve this problem, if you need it, check it out.

1. Chinese interception: mb_substr ()

Mb_substr ($ str, $ start, $ length, $ encoding)

$ Str: string to be truncated
$ Start: truncates the start point. The start point is 0.
$ Length, number of words to be intercepted
$ Encoding: webpage encoding, such as UTF-8, GB2312, and GBK

Instance:

The code is as follows:
$ Str = 'movie 618: http://www.bKjia. c0m '; Echo mb_substr ($ str, 'utf-8'); // capture the first five characters. assume that the php file where the code is located is encoded as UTF-8. ?>

Results: Movie 618

2. get Chinese characters: mb_strlen ()

Mb_strlen ($ str, $ encoding)

$ Str: string to calculate the length
$ Encoding: webpage encoding, such as UTF-8, GB2312, and GBK

Instance:

The code is as follows:
$ Str = 'movie 618: http://www.hzhuti.com '; Echo mb_strlen ($ str, 'utf-8'); // assume that the php file where the code is located is encoded as UTF-8. ?>

Result: 29

Random () will cause garbled characters. Fortunately, there is the mb_substr () function in php to solve this problem. if you need it, check it out ....