mb_strlen

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

mb_strlen — ��ȡ�ַ��ĳ��

˵��

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

��ȡһ�� string �ĳ��ȡ�

��

str: Ҫ��鳤�ȵ��ַ��
encoding: encoding ��Ϊ�ַ��롣��ʡ�ԣ��ʹ��ڲ��ַ��롣

��ֵ

��ؾ�� encoding ��ַ�� str ��ַ�� ֽڵ��ַ��Ϊ 1��

�� encoding ��Ч�򷵻� FALSE��

�μ�

mb_internal_encoding() - ��/��ȡ�ڲ��ַ��
grapheme_strlen() - Get string length in grapheme units
iconv_strlen() - ��ַ��ַ��ͳ��
strlen() - ��ȡ�ַ��