<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >gzread</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="Zlib Compression Functions" HREF="ref.zlib.html"><LINK REL="PREVIOUS" TITLE="gzputs" HREF="function.gzputs.html"><LINK REL="NEXT" TITLE="gzrewind" HREF="function.gzrewind.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.gzputs.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.gzrewind.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.gzread" ></A >gzread</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN251977" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >gzread -- Binary-safe gz-file read</DIV ><DIV CLASS="refsect1" ><A NAME="AEN251980" ></A ><H2 >说明</H2 >string <B CLASS="methodname" >gzread</B > ( resource zp, int length )<BR ></BR ><P > <B CLASS="function" >gzread()</B > reads up to <CODE CLASS="parameter" >length</CODE > bytes from the given gz-file pointer. Reading stops when <CODE CLASS="parameter" >length</CODE > (uncompressed) bytes have been read or EOF is reached, whichever comes first. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN251995" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >zp</CODE ></DT ><DD ><P > The gz-file pointer. It must be valid, and must point to a file successfully opened by <A HREF="function.gzopen.html" ><B CLASS="function" >gzopen()</B ></A >. </P ></DD ><DT ><CODE CLASS="parameter" >length</CODE ></DT ><DD ><P > The number of bytes to read. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN252010" ></A ><H2 >返回值</H2 ><P > The data that have been read. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN252013" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN252016" ></A ><P ><B >例 1. <B CLASS="function" >gzread()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// get contents of a gz-file into a string<br /></font><font color="#0000BB">$filename </font><font color="#007700">= </font><font color="#DD0000">"/usr/local/something.txt.gz"</font><font color="#007700">;<br /></font><font color="#0000BB">$zd </font><font color="#007700">= </font><font color="#0000BB">gzopen</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">, </font><font color="#DD0000">"r"</font><font color="#007700">);<br /></font><font color="#0000BB">$contents </font><font color="#007700">= </font><font color="#0000BB">gzread</font><font color="#007700">(</font><font color="#0000BB">$zd</font><font color="#007700">, </font><font color="#0000BB">10000</font><font color="#007700">);<br /></font><font color="#0000BB">gzclose</font><font color="#007700">(</font><font color="#0000BB">$zd</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN252020" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.gzwrite.html" ><B CLASS="function" >gzwrite()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.gzopen.html" ><B CLASS="function" >gzopen()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.gzgets.html" ><B CLASS="function" >gzgets()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.gzgetss.html" ><B CLASS="function" >gzgetss()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.gzfile.html" ><B CLASS="function" >gzfile()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.gzpassthru.html" ><B CLASS="function" >gzpassthru()</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.gzputs.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.gzrewind.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >gzputs</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.zlib.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >gzrewind</TD ></TR ></TABLE ></DIV ></BODY ></HTML >