You can use the "mb_substr()" function in PHP to solve the problem of intercepting Chinese garbled characters. Its syntax is "mb_substr (string $str, int $start...)", and the parameter "str" means from The substring extracted from this string.
Use the PHP substr() function to intercept Chinese string garbled characters and replace it with the PHP mb_substr() function.
mb_substr() definition and usage
mb_substr() function returns a part of the string. We have learned the substr() function before. It only targets English characters. If Chinese text to be divided needs to use mb_substr().
Note: If the start parameter is negative and length is less than or equal to start, length is 0.
Syntax
mb_substr ( string $str , int $start [, int $length = NULL [, string $encoding = mb_internal_encoding() ]] ) : string
Parameters
str Required. Extracts a substring from this string.
start Required. Specifies where in the string to begin.
Positive number - starts at the specified position in the string
Negative number - starts at the specified position from the end of the string
0 - at the first character in the string Start at
length Optional. Specifies the length of the string to be returned. The default is until the end of the string.
Positive number - returned from the position of the start parameter
Negative number - returned from the end of the string
encoding Optional. Character Encoding. If omitted, the internal character encoding is used.
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