<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ob_get_length</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="Output Control 输出控制函数" HREF="ref.outcontrol.html"><LINK REL="PREVIOUS" TITLE="ob_get_flush" HREF="function.ob-get-flush.html"><LINK REL="NEXT" TITLE="ob_get_level" HREF="function.ob-get-level.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.ob-get-flush.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.ob-get-level.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.ob-get-length" ></A >ob_get_length</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN165679" ></A ><P > (PHP 4 >= 4.0.2, PHP 5)</P >ob_get_length -- Return the length of the output buffer </DIV ><DIV CLASS="refsect1" ><A NAME="AEN165682" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >ob_get_length</B > ( void )<BR ></BR ><P > This will return the length of the contents in the output buffer or <TT CLASS="constant" ><B >FALSE</B ></TT >, if output buffering isn't active. </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN165691" ></A ><P ><B >例 1. A simple <B CLASS="function" >ob_get_length()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />ob_start</font><font color="#007700">();<br /><br />echo </font><font color="#DD0000">"Hello "</font><font color="#007700">;<br /><br /></font><font color="#0000BB">$len1 </font><font color="#007700">= </font><font color="#0000BB">ob_get_length</font><font color="#007700">();<br /><br />echo </font><font color="#DD0000">"World"</font><font color="#007700">;<br /><br /></font><font color="#0000BB">$len2 </font><font color="#007700">= </font><font color="#0000BB">ob_get_length</font><font color="#007700">();<br /><br /></font><font color="#0000BB">ob_end_clean</font><font color="#007700">();<br /><br />echo </font><font color="#0000BB">$len1 </font><font color="#007700">. </font><font color="#DD0000">", ." </font><font color="#007700">. </font><font color="#0000BB">$len2</font><font color="#007700">;<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > Our example will output: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >6, 11</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > See also <A HREF="function.ob-start.html" ><B CLASS="function" >ob_start()</B ></A > and <A HREF="function.ob-get-contents.html" ><B CLASS="function" >ob_get_contents()</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.ob-get-flush.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.ob-get-level.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ob_get_flush</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.outcontrol.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ob_get_level</TD ></TR ></TABLE ></DIV ></BODY ></HTML >