Application example of php mb_substr() function to intercept Chinese string_PHP tutorial

php mb_substr() function interception Chinese string application example

The substr() function is used to intercept strings, but there will be problems with Chinese characters, and mb_substr() and mb_strcut These two functions can be used. Here is an introduction to their specific usage

The substr() function is used to intercept strings, but there will be problems with Chinese characters. The two functions mb_substr() and mb_strcut can be used. The usage is similar to substr(), except that one more parameter needs to be added at the end of the function. To set the encoding of the string, using these two functions requires opening php_mbstring.dll in php.ini.

Header("content-type:text/html; charset=utf-8");

$string = "Hello, hello, hello everyone";

echo strlen($string).'
';

echo mb_substr($string,0,4,'utf-8').'...
';

echo mb_strcut($string,0,4,'utf-8').'...';

　?>

Output result:

　21

Hello, I’m good...

You...

As can be seen from the above example, mb_substr splits characters by words, while mb_strcut splits characters by bytes, but neither will produce half a character.

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