PHP Chinese processing Chinese string interception (mb_substr) and obtaining the number of Chinese string words_PHP tutorial

1. Chinese interception: mb_substr()

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

$str, the string that needs to be truncated
$start, the starting point of truncation, the starting point is 0
$length, the number of words to be intercepted
$encoding, web page encoding, such as utf-8, GB2312, GBK

Example:

Copy code The code is as follows:

$str='Script Home: http://www .jb51.net';
echo mb_substr($str,0,4,'utf-8');//Intercept the first 5 characters, assuming that the encoding of the php file where this code is located is utf-8
? >
The results show: Script Home

2. Get the Chinese length: mb_strlen()

mb_strlen( $str, $ encoding )

$str, the string to calculate the length
$encoding, web page encoding, such as utf-8, GB2312, GBK

Example:

Copy code The code is as follows:

$str='Script Home: http://www.jb51.net';
echo mb_strlen($str,'utf-8');//Assume that the encoding of the php file where this code is located is utf-8
?>
The result shows: 24

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