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>db2_conn_error</H1
><DIV
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><A
NAME="AEN80027"
></A
><P
> (PECL)</P
>db2_conn_error --
Returns a string containing the SQLSTATE returned by the last connection attempt
</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN80030"
></A
><H2
>说明</H2
>string <B
CLASS="methodname"
>db2_conn_error</B
> ( [resource connection] )<BR
></BR
><P
> <B
CLASS="function"
>db2_conn_error()</B
> returns an SQLSTATE value representing
the reason the last attempt to connect to a database failed. As
<A
HREF="function.db2-connect.html"
><B
CLASS="function"
>db2_connect()</B
></A
> returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
> in the event of a failed
connection attempt, you do not pass any parameters to
<B
CLASS="function"
>db2_conn_error()</B
> to retrieve the SQLSTATE value.
</P
><P
> If, however, the connection was successful but becomes invalid over time,
you can pass the <CODE
CLASS="parameter"
>connection</CODE
> parameter to retrieve
the SQLSTATE value for a specific connection.
</P
><P
> To learn what the SQLSTATE value means, you can issue the following command
at a DB2 Command Line Processor prompt:
<KBD
CLASS="userinput"
>db2 '? <CODE
CLASS="parameter"
>sqlstate-value</CODE
>'</KBD
>. You
can also call <A
HREF="function.db2-conn-errormsg.html"
><B
CLASS="function"
>db2_conn_errormsg()</B
></A
> to retrieve an
explicit error message and the associated SQLCODE value.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN80049"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>connection</CODE
></DT
><DD
><P
> A connection resource associated with a connection that initially
succeeded, but which over time became invalid.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN80058"
></A
><H2
>返回值</H2
><P
> Returns the SQLSTATE value resulting from a failed connection attempt.
Returns an empty string if there is no error associated with the last
connection attempt.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN80061"
></A
><H2
>范例</H2
><P
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><TD
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CLASS="example"
><A
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></A
><P
><B
>例 1. Retrieving an SQLSTATE value for a failed connection attempt</B
></P
><P
> The following example demonstrates how to return an SQLSTATE value
after deliberately passing invalid parameters to
<A
HREF="function.db2-connect.html"
><B
CLASS="function"
>db2_connect()</B
></A
>.
</P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$conn </font><font color="#007700">= </font><font color="#0000BB">db2_connect</font><font color="#007700">(</font><font color="#DD0000">'badname'</font><font color="#007700">, </font><font color="#DD0000">'baduser'</font><font color="#007700">, </font><font color="#DD0000">'badpassword'</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$conn</font><font color="#007700">) {<br /> print </font><font color="#DD0000">"SQLSTATE value: " </font><font color="#007700">. </font><font color="#0000BB">db2_conn_error</font><font color="#007700">();<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
><P
>上例将输出：</P
><TABLE
BORDER="0"
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><TR
><TD
><PRE
CLASS="screen"
>SQLSTATE value: 08001</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN80071"
></A
><H2
>参见</H2
><P
> <P
></P
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><TBODY
><TR
><TD
><A
HREF="function.db2-conn-errormsg.html"
><B
CLASS="function"
>db2_conn_errormsg()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.db2-connect.html"
><B
CLASS="function"
>db2_connect()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.db2-stmt-error.html"
><B
CLASS="function"
>db2_stmt_error()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.db2-stmt-errormsg.html"
><B
CLASS="function"
>db2_stmt_errormsg()</B
></A
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