What to do if php intercepts Chinese garbled characters

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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