<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >shmop_read</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="Shared Memory Functions" HREF="ref.shmop.html"><LINK REL="PREVIOUS" TITLE="shmop_open" HREF="function.shmop-open.html"><LINK REL="NEXT" TITLE="shmop_size" HREF="function.shmop-size.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.shmop-open.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.shmop-size.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.shmop-read" ></A >shmop_read</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN209076" ></A ><P > (PHP 4 >= 4.0.4, PHP 5)</P >shmop_read -- Read data from shared memory block</DIV ><DIV CLASS="refsect1" ><A NAME="AEN209079" ></A ><H2 >说明</H2 >string <B CLASS="methodname" >shmop_read</B > ( int shmid, int start, int count )<BR ></BR ><P > <B CLASS="function" >shmop_read()</B > will read a string from shared memory block. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN209095" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >shmid</CODE ></DT ><DD ><P > The shared memory block identifier created by <A HREF="function.shmop-open.html" ><B CLASS="function" >shmop_open()</B ></A > </P ></DD ><DT ><CODE CLASS="parameter" >start</CODE ></DT ><DD ><P > Offset from which to start reading </P ></DD ><DT ><CODE CLASS="parameter" >count</CODE ></DT ><DD ><P > The number of bytes to read </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN209115" ></A ><H2 >返回值</H2 ><P > Returns the data or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN209119" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN209122" ></A ><P ><B >例 1. Reading shared memory block</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$shm_data </font><font color="#007700">= </font><font color="#0000BB">shmop_read</font><font color="#007700">(</font><font color="#0000BB">$shm_id</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">50</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > This example will read 50 bytes from shared memory block and place the data inside <TT CLASS="literal" >$shm_data</TT >. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN209127" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.shmop-write.html" ><B CLASS="function" >shmop_write()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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.shmop-open.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.shmop-size.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >shmop_open</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.shmop.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >shmop_size</TD ></TR ></TABLE ></DIV ></BODY ></HTML >