<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >OCI-Lob->seek</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="Oracle 函数" HREF="ref.oci8.html"><LINK REL="PREVIOUS" TITLE="OCI-Lob->saveFile" HREF="function.oci-lob-savefile.html"><LINK REL="NEXT" TITLE="OCI-Lob->setBuffering" HREF="function.oci-lob-setbuffering.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.oci-lob-savefile.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.oci-lob-setbuffering.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.oci-lob-seek" ></A >OCI-Lob->seek</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN158398" ></A ><P > (no version information, might be only in CVS)</P >OCI-Lob->seek -- Sets the internal pointer of the large object</DIV ><DIV CLASS="refsect1" ><A NAME="AEN158401" ></A ><H2 >说明</H2 >class <B CLASS="classname" >OCI-Lob</B > { <BR ></BR >bool <B CLASS="methodname" >seek</B > ( int offset [, int whence] )<BR ></BR >}<P > Sets the internal pointer of the large object. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN158416" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >offset</CODE ></DT ><DD ><P > Indicates the amount of bytes, on which internal pointer should be moved from the position, pointed by <CODE CLASS="parameter" >whence</CODE >. </P ></DD ><DT ><CODE CLASS="parameter" >whence</CODE ></DT ><DD ><P > May be one of: <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD > <TT CLASS="constant" ><B >OCI_SEEK_SET</B ></TT > - sets the position equal to <CODE CLASS="parameter" >offset</CODE > </TD ></TR ><TR ><TD > <TT CLASS="constant" ><B >OCI_SEEK_CUR</B ></TT > - adds <CODE CLASS="parameter" >offset</CODE > bytes to the current position </TD ></TR ><TR ><TD > <TT CLASS="constant" ><B >OCI_SEEK_END</B ></TT > - adds <CODE CLASS="parameter" >offset</CODE > bytes to the end of large object (use negative value to move to a position before the end of large object) </TD ></TR ></TBODY ></TABLE ><P ></P > </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN158441" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN158446" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.oci-lob-rewind.html" >OCI-Lob->rewind</A ></TD ></TR ><TR ><TD ><A HREF="function.oci-lob-tell.html" >OCI-Lob->tell</A ></TD ></TR ><TR ><TD ><A HREF="function.oci-lob-eof.html" >OCI-Lob->eof</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.oci-lob-savefile.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.oci-lob-setbuffering.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >OCI-Lob->saveFile</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.oci8.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >OCI-Lob->setBuffering</TD ></TR ></TABLE ></DIV ></BODY ></HTML >