<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >rpm_is_valid</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="RPM Header Reading 函数" HREF="ref.rpmreader.html"><LINK REL="PREVIOUS" TITLE="rpm_get_tag" HREF="function.rpm-get-tag.html"><LINK REL="NEXT" TITLE="rpm_open" HREF="function.rpm-open.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.rpm-get-tag.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.rpm-open.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.rpm-is-valid" ></A >rpm_is_valid</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN198204" ></A ><P > (no version information, might be only in CVS)</P >rpm_is_valid -- Tests a filename for validity as an RPM file</DIV ><DIV CLASS="refsect1" ><A NAME="AEN198207" ></A ><H2 >说明</H2 >bool <B CLASS="methodname" >rpm_is_valid</B > ( string filename )<BR ></BR ><P > <B CLASS="function" >rpm_is_valid()</B > will test an RPM file for validity as an RPM file. This is not the same as <A HREF="function.rpm-open.html" ><B CLASS="function" >rpm_open()</B ></A > as it only checks the file for validity but does not return a file pointer to be used by further functions. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN198218" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >filename</CODE ></DT ><DD ><P > The filename of the RPM file you wish to check for validity. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN198227" ></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="AEN198232" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN198235" ></A ><P ><B >例 1. <B CLASS="function" >rpm_is_valid()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$file </font><font color="#007700">= </font><font color="#DD0000">"/path/to/file.rpm"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">rpm_is_valid</font><font color="#007700">(</font><font color="#0000BB">$file</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"File is recognized as an RPM file.<br>\n"</font><font color="#007700">;<br />}<br />else {<br /> echo </font><font color="#DD0000">"File is not recognized as an RPM file.<br>\n"</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </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.rpm-get-tag.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.rpm-open.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >rpm_get_tag</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.rpmreader.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >rpm_open</TD ></TR ></TABLE ></DIV ></BODY ></HTML >