<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >exit</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="Miscellaneous Functions" HREF="ref.misc.html"><LINK REL="PREVIOUS" TITLE="eval" HREF="function.eval.html"><LINK REL="NEXT" TITLE="get_browser" HREF="function.get-browser.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.eval.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.get-browser.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.exit" ></A >exit</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN125412" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >exit -- Output a message and terminate the current script</DIV ><DIV CLASS="refsect1" ><A NAME="AEN125415" ></A ><H2 >说明</H2 >void <B CLASS="methodname" >exit</B > ( [string status] )<BR ></BR >void <B CLASS="methodname" >exit</B > ( int status )<BR ></BR ><P > Terminates execution of the script. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN125430" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >status</CODE ></DT ><DD ><P > If <CODE CLASS="parameter" >status</CODE > is a string, this function prints the <CODE CLASS="parameter" >status</CODE >, if set as a string just before exiting. </P ><P > If <CODE CLASS="parameter" >status</CODE > is an <A HREF="language.types.integer.html" ><B CLASS="type" >integer</B ></A >, that value will also be used as the exit status. Exit statuses should be in the range 0 to 254, the exit status 255 is reserved by PHP and shall not be used. The status 0 is used to terminate the program successfully. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > PHP >= 4.2.0 does NOT print the <CODE CLASS="parameter" >status</CODE > if it is an <A HREF="language.types.integer.html" ><B CLASS="type" >integer</B ></A >. </P ></BLOCKQUOTE ></DIV ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN125448" ></A ><H2 >返回值</H2 ><P > 无返回值。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN125451" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN125454" ></A ><P ><B >例 1. <B CLASS="function" >exit()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$filename </font><font color="#007700">= </font><font color="#DD0000">'/path/to/data-file'</font><font color="#007700">;<br /></font><font color="#0000BB">$file </font><font color="#007700">= </font><font color="#0000BB">fopen</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">, </font><font color="#DD0000">'r'</font><font color="#007700">)<br /> or exit(</font><font color="#DD0000">"unable to open file ($filename)"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN125459" ></A ><P ><B >例 2. <B CLASS="function" >exit()</B > status example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br /></font><font color="#FF8000">//exit program normally<br /></font><font color="#007700">exit;<br />exit();<br />exit(</font><font color="#0000BB">0</font><font color="#007700">);<br /><br /></font><font color="#FF8000">//exit with an error code<br /></font><font color="#007700">exit(</font><font color="#0000BB">1</font><font color="#007700">);<br />exit(</font><font color="#0000BB">0376</font><font color="#007700">); </font><font color="#FF8000">//octal<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN125463" ></A ><H2 >注释</H2 ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B >由于这是一个语言结构而非函数,因此它无法被<A HREF="functions.variable-functions.html" >变量函数</A >调用。</P ></BLOCKQUOTE ></DIV ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > This language construct is equivalent to <A HREF="function.die.html" ><B CLASS="function" >die()</B ></A >. </P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN125471" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.register-shutdown-function.html" ><B CLASS="function" >register_shutdown_function()</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.eval.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.get-browser.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >eval</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.misc.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >get_browser</TD ></TR ></TABLE ></DIV ></BODY ></HTML >