<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >escapeshellarg</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="Program Execution Functions" HREF="ref.exec.html"><LINK REL="PREVIOUS" TITLE="Program Execution Functions" HREF="ref.exec.html"><LINK REL="NEXT" TITLE="escapeshellcmd" HREF="function.escapeshellcmd.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="ref.exec.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.escapeshellcmd.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.escapeshellarg" ></A >escapeshellarg</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN188758" ></A ><P > (PHP 4 >= 4.0.3, PHP 5)</P >escapeshellarg -- Escape a string to be used as a shell argument</DIV ><DIV CLASS="refsect1" ><A NAME="AEN188761" ></A ><H2 >说明</H2 >string <B CLASS="methodname" >escapeshellarg</B > ( string arg )<BR ></BR ><P > <B CLASS="function" >escapeshellarg()</B > adds single quotes around a string and quotes/escapes any existing single quotes allowing you to pass a string directly to a shell function and having it be treated as a single safe argument. This function should be used to escape individual arguments to shell functions coming from user input. The shell functions include <A HREF="function.exec.html" ><B CLASS="function" >exec()</B ></A >, <A HREF="function.system.html" ><B CLASS="function" >system()</B ></A > and the <A HREF="language.operators.execution.html" >backtick operator</A >. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN188774" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >arg</CODE ></DT ><DD ><P > The argument that will be escaped. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN188783" ></A ><H2 >返回值</H2 ><P > The escaped string. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN188786" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN188789" ></A ><P ><B >例 1. <B CLASS="function" >escapeshellarg()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />system</font><font color="#007700">(</font><font color="#DD0000">'ls '</font><font color="#007700">.</font><font color="#0000BB">escapeshellarg</font><font color="#007700">(</font><font color="#0000BB">$dir</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="AEN188793" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.escapeshellcmd.html" ><B CLASS="function" >escapeshellcmd()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.exec.html" ><B CLASS="function" >exec()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.popen.html" ><B CLASS="function" >popen()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.system.html" ><B CLASS="function" >system()</B ></A ></TD ></TR ><TR ><TD ><A HREF="language.operators.execution.html" >backtick operator</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="ref.exec.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.escapeshellcmd.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Program Execution Functions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.exec.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >escapeshellcmd</TD ></TR ></TABLE ></DIV ></BODY ></HTML >