Get string length

# mb_strlen

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

mb_strlen — Get string length

### Description

mb_strlen(string `$string`, ?string `$encoding` = `null`): int

Gets the length of a string.

### Parameters

`string`

  The string being checked for length.

`encoding`

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

### Return Values

Returns the number of characters in string `string` having character encoding `encoding`. A multi-byte character is counted as 1.

### Errors/Exceptions

If the encoding is unknown, an error of level `E_WARNING` is generated.

### Changelog

Version | Description
--- | ---
8.0.0 | `encoding` is nullable now.

### See Also

- mb_internal_encoding() - Set/Get internal character encoding
- grapheme_strlen() - Get string length in grapheme units
- iconv_strlen() - Returns the character count of string
- strlen() - Get string length

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