<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >fbsql_error</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="FrontBase Functions" HREF="ref.fbsql.html"><LINK REL="PREVIOUS" TITLE="fbsql_errno" HREF="function.fbsql-errno.html"><LINK REL="NEXT" TITLE="fbsql_fetch_array" HREF="function.fbsql-fetch-array.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.fbsql-errno.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.fbsql-fetch-array.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.fbsql-error" ></A >fbsql_error</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN59096" ></A ><P > (PHP 4 >= 4.0.6, PHP 5)</P >fbsql_error -- Returns the error message from previous operation</DIV ><DIV CLASS="refsect1" ><A NAME="AEN59099" ></A ><H2 >说明</H2 >string <B CLASS="methodname" >fbsql_error</B > ( [resource link_identifier] )<BR ></BR ><P > Returns the error message from previous FrontBase operation. </P ><P > Errors coming back from the fbsql database backend don't issue warnings. Instead, use <B CLASS="function" >fbsql_error()</B > to retrieve the error text. Note that this function only returns the error code from the most recently executed fbsql function (not including <B CLASS="function" >fbsql_error()</B > and <A HREF="function.fbsql-errno.html" ><B CLASS="function" >fbsql_errno()</B ></A >), so if you want to use it, make sure you check the value before calling another fbsql function. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN59112" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" > link_identifier</CODE ></DT ><DD ><P >A FrontBase link identifier returned by <A HREF="function.fbsql-connect.html" ><B CLASS="function" >fbsql_connect()</B ></A > or <A HREF="function.fbsql-pconnect.html" ><B CLASS="function" >fbsql_pconnect()</B ></A >.</P ><P >If optional and not specified, the function will try to find an open link to the FrontBase server and if no such link is found it will try to create one as if <A HREF="function.fbsql-connect.html" ><B CLASS="function" >fbsql_connect()</B ></A > was called with no arguments</P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN59125" ></A ><H2 >返回值</H2 ><P > Returns the error text from the last fbsql function, or <TT CLASS="literal" >''</TT > (the empty string) if no error occurred. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN59129" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN59132" ></A ><P ><B >例 1. <B CLASS="function" >fbsql_error()</B > Example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />fbsql_connect</font><font color="#007700">(</font><font color="#DD0000">"marliesle"</font><font color="#007700">);<br />echo </font><font color="#0000BB">fbsql_errno</font><font color="#007700">() . </font><font color="#DD0000">": " </font><font color="#007700">. </font><font color="#0000BB">fbsql_error</font><font color="#007700">() . </font><font color="#DD0000">"<br />"</font><font color="#007700">;<br /></font><font color="#0000BB">fbsql_select_db</font><font color="#007700">(</font><font color="#DD0000">"nonexistentdb"</font><font color="#007700">);<br />echo </font><font color="#0000BB">fbsql_errno</font><font color="#007700">() . </font><font color="#DD0000">": " </font><font color="#007700">. </font><font color="#0000BB">fbsql_error</font><font color="#007700">() . </font><font color="#DD0000">"<br />"</font><font color="#007700">;<br /></font><font color="#0000BB">$conn </font><font color="#007700">= </font><font color="#0000BB">fbsql_query</font><font color="#007700">(</font><font color="#DD0000">"SELECT * FROM nonexistenttable;"</font><font color="#007700">);<br />echo </font><font color="#0000BB">fbsql_errno</font><font color="#007700">() . </font><font color="#DD0000">": " </font><font color="#007700">. </font><font color="#0000BB">fbsql_error</font><font color="#007700">() . </font><font color="#DD0000">"<br />"</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="AEN59136" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.fbsql-errno.html" ><B CLASS="function" >fbsql_errno()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.fbsql-warnings.html" ><B CLASS="function" >fbsql_warnings()</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.fbsql-errno.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.fbsql-fetch-array.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >fbsql_errno</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.fbsql.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >fbsql_fetch_array</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
