<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >variant_cmp</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="COM 和 .Net(Windows)函数" HREF="ref.com.html"><LINK REL="PREVIOUS" TITLE="variant_cat" HREF="function.variant-cat.html"><LINK REL="NEXT" TITLE="variant_date_from_timestamp" HREF="function.variant-date-from-timestamp.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.variant-cat.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.variant-date-from-timestamp.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.variant-cmp" ></A >variant_cmp</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN22562" ></A ><P > (PHP 5)</P >variant_cmp -- Compares two variants </DIV ><DIV CLASS="refsect1" ><A NAME="AEN22565" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >variant_cmp</B > ( mixed left, mixed right [, int lcid [, int flags]] )<BR ></BR ><P > Compares <CODE CLASS="parameter" >left</CODE > with <CODE CLASS="parameter" >right</CODE > and returns one of the following values: <DIV CLASS="table" ><A NAME="AEN22585" ></A ><P ><B >表 1. Variant Comparision Results</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >value</TH ><TH >meaning</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="constant" ><B >VARCMP_LT</B ></TT ></TD ><TD ><CODE CLASS="parameter" >left</CODE > is less than <CODE CLASS="parameter" >right</CODE > </TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >VARCMP_EQ</B ></TT ></TD ><TD ><CODE CLASS="parameter" >left</CODE > is equal to <CODE CLASS="parameter" >right</CODE > </TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >VARCMP_GT</B ></TT ></TD ><TD ><CODE CLASS="parameter" >left</CODE > is greater than <CODE CLASS="parameter" >right</CODE > </TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >VARCMP_NULL</B ></TT ></TD ><TD >Either <CODE CLASS="parameter" >left</CODE >, <CODE CLASS="parameter" >right</CODE > or both are <TT CLASS="constant" ><B >NULL</B ></TT > </TD ></TR ></TBODY ></TABLE ></DIV > </P ><P > This function will only compare scalar values, not arrays or variant records. </P ><P > <CODE CLASS="parameter" >lcid</CODE > is a valid Locale Identifier to use when comparing strings (this affects string collation). <CODE CLASS="parameter" >flags</CODE > can be one or more of the following values OR'd together, and affects string comparisons: <DIV CLASS="table" ><A NAME="AEN22622" ></A ><P ><B >表 2. Variant Comparision Flags</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >value</TH ><TH >meaning</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNORECASE</B ></TT ></TD ><TD >Compare case insensitively</TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNORENONSPACE</B ></TT ></TD ><TD >Ignore nonspacing characters</TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNORESYMBOLS</B ></TT ></TD ><TD >Ignore symbols</TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNOREWIDTH</B ></TT ></TD ><TD >Ignore string width</TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNOREKANATYPE</B ></TT ></TD ><TD >Ignore Kana type</TD ></TR ><TR ><TD ><TT CLASS="constant" ><B >NORM_IGNOREKASHIDA</B ></TT ></TD ><TD >Ignore Arabic kashida characters</TD ></TR ></TBODY ></TABLE ></DIV > </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > 对于所有的变量算法函数,此函数的参数可以要么是 PHP 自身的类型(整型,字符串,浮点型,布尔型或者 <TT CLASS="constant" ><B >NULL</B ></TT >),要么是一个 COM,VARIANT 或 DOTNET 类的实例。PHP 自身类型将被转换为变量,使用与 <A HREF="class.variant.html" >VARIANT</A > 类的构造函数中相同的规则。COM 和 DOTNET 对象将具有其默认属性的值,取得并作为变量值使用。 </P ><P > 变量算法函数是 COM 库中与其名称接近的函数的封装。此类函数的更多信息请参考 MSDN 库。PHP 函数命名有少许不同,例如 PHP 中的 variant_add() 对应于 MSDN 文档中的 VarAdd()。 </P ></BLOCKQUOTE ></DIV ></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.variant-cat.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.variant-date-from-timestamp.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >variant_cat</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.com.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >variant_date_from_timestamp</TD ></TR ></TABLE ></DIV ></BODY ></HTML >