WEB/PHP

mb_substr

Remoted remoted 2021. 9. 13. 21:26

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_substr  Get part of string

Description 

mb_substr(
    string $string,
    int $start,
    ?int $length = null,
    ?string $encoding = null
): string

Performs a multi-byte safe substr() operation based on number of characters. Position is counted from the beginning of string. First character's position is 0. Second character position is 1, and so on.

Parameters 

string

The string to extract the substring from.

start

If start is non-negative, the returned string will start at the start'th position in string, counting from zero. For instance, in the string 'abcdef', the character at position 0 is 'a', the character at position 2 is 'c', and so forth.

If start is negative, the returned string will start at the start'th character from the end of string.

length

Maximum number of characters to use from string. If omitted or NULL is passed, extract all characters to the end of the string.

encoding

The encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.

Return Values 

mb_substr() returns the portion of string specified by the start and length parameters.

Changelog 

VersionDescription

8.0.0 encoding is nullable now.

See Also 

https://www.php.net/manual/en/function.mb-substr

 

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