<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >mb_strwidth</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Multibyte String Functions" HREF="ref.mbstring.html"><LINK REL="PREVIOUS" TITLE="mb_strtoupper" HREF="function.mb-strtoupper.html"><LINK REL="NEXT" TITLE="mb_substitute_character" HREF="function.mb-substitute-character.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mb-strtoupper.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mb-substitute-character.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mb-strwidth" ></A >mb_strwidth</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN134014" ></A ><P > (PHP 4 >= 4.0.6, PHP 5)</P >mb_strwidth -- Return width of string</DIV ><DIV CLASS="refsect1" ><A NAME="AEN134017" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >mb_strwidth</B > ( string str [, string encoding] )<BR ></BR ><P > <B CLASS="function" >mb_strwidth()</B > returns width of string <CODE CLASS="parameter" >str</CODE >. </P ><P > Multi-byte character usually twice of width compare to single byte character. </P ><P > <DIV CLASS="table" ><A NAME="AEN134033" ></A ><P ><B >表 1. Characters width</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Chars</TH ><TH >Width</TH ></TR ></THEAD ><TBODY ><TR ><TD >U+0000 - U+0019</TD ><TD >0</TD ></TR ><TR ><TD >U+0020 - U+1FFF</TD ><TD >1</TD ></TR ><TR ><TD >U+2000 - U+FF60</TD ><TD >2</TD ></TR ><TR ><TD >U+FF61 - U+FF9F</TD ><TD >1</TD ></TR ><TR ><TD >U+FFA0 - </TD ><TD >2</TD ></TR ></TBODY ></TABLE ></DIV > </P ><P > <CODE CLASS="parameter" >encoding</CODE > is character encoding. If it is omitted, internal encoding is used. </P ><P > See also: <A HREF="function.mb-strimwidth.html" ><B CLASS="function" >mb_strimwidth()</B ></A >, <A HREF="function.mb-internal-encoding.html" ><B CLASS="function" >mb_internal_encoding()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.mb-strtoupper.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mb-substitute-character.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mb_strtoupper</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mbstring.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mb_substitute_character</TD ></TR ></TABLE ></DIV ></BODY ></HTML >