mb_strlen

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

Get string length

mixed mb_strlen ( string $str [, string $encoding = mb_internal_encoding() ] )

Gets the length of a string.

Parameters:

str

The string being checked for length.

encoding

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

Returns:

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

Returns FALSE if the given encoding is invalid.

Warning

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.