PHP string splitting function mb_substr

    There are many ways to process strings in PHP. Tonight we have selected a very representative and widely used function to explain. It is the character

characterstring splitting function: mb_substr( ), I hope everyone will recognizetrue learning and understand!

// mb_substr() has several parameters, usually 3 or 4 parameters. Let’s talk about the last parameter in particular, which is to set the encoding

// Let’s look at the different encodings through cases below , what is the huge difference in the result

$str = 'We all have a dream rventrc'; $str = mb_substr($str, 0,3); // Since no encoding is specified,
1 Chinese character is treated as 3 characters in length, it will output: '我' $str = mb_substr($str, 0,3,'utf8'); // Since
utf8 encoding is specified, one Chinese character is 1 character in length, so it will be output ：'We all' $str = mb_substr($str, -4,2,'utf8'); // This means starting from the 4th
from the bottom of , intercepting 2 characters of length // It means starting from the subscript Starting from 2, intercept until the 5th character from the bottom (excluding the 5th from the bottom)
, so the result is: 'Everyone has a dream rv'

$str = mb_substr($str, 2, -5 ,'utf8');

Through tonight’s detailed analysis, I believe everyone has a clearer understanding of intercepting Chinese strings. In fact, it can be easily solved by setting the encoding,

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The above introduces the PHP string splitting function mb_substr, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.