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php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>maxdb_stmt_error</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN113045"
></A
><P
>    (PECL)</P
>maxdb_stmt_error<P
>    (no version information, might be only in CVS)</P
>maxdb_stmt-&#62;error&nbsp;--&nbsp;Returns a string description for last statement error</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN113049"
></A
><H2
>Description</H2
><P
>Procedural style:</P
>string <B
CLASS="methodname"
>maxdb_stmt_error</B
> ( resource stmt )<BR
></BR
><P
>Object oriented style (property):</P
>class <B
CLASS="classname"
>stmt</B
> { <BR
></BR
>string error<BR
></BR
>}<P
>&#13;   For the statement specified by <TT
CLASS="literal"
>stmt</TT
>, <B
CLASS="function"
>maxdb_stmt_error()</B
>
   returns a containing the error message for the most recently invoked statement function that
   can succeed or fail.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN113068"
></A
><H2
>Return values</H2
><P
>&#13;   A string that describes the error. An empty string if no error occurred.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN113071"
></A
><H2
>See also</H2
><P
>&#13;   <A
HREF="function.maxdb-stmt-errno.html"
><B
CLASS="function"
>maxdb_stmt_errno()</B
></A
>,
   <A
HREF="function.maxdb-stmt-sqlstate.html"
><B
CLASS="function"
>maxdb_stmt_sqlstate()</B
></A
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN113076"
></A
><H2
>Example</H2
><TABLE
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><A
NAME="AEN113078"
></A
><P
><B
>例 1. Object oriented style</B
></P
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">/* Open a connection */<br /></font><font color="#0000BB">$maxdb </font><font color="#007700">= new </font><font color="#0000BB">maxdb</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">maxdb_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"CREATE TABLE temp.mycity LIKE hotel.city"</font><font color="#007700">);<br /></font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"INSERT INTO temp.mycity SELECT * FROM hotel.city"</font><font color="#007700">);<br /><br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT name, zip FROM temp.mycity ORDER BY name"</font><font color="#007700">;<br />if (</font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">prepare</font><font color="#007700">(</font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* drop table */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"DROP TABLE temp.mycity"</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* execute query */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$stmt</font><font color="#007700">-&gt;</font><font color="#0000BB">execute</font><font color="#007700">();<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Error: %s.\n"</font><font color="#007700">, </font><font color="#0000BB">$stmt</font><font color="#007700">-&gt;</font><font color="#0000BB">error</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* close statement */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$stmt</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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NAME="AEN113081"
></A
><P
><B
>例 2. Procedural style</B
></P
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">/* Open a connection */<br /></font><font color="#0000BB">$link </font><font color="#007700">= </font><font color="#0000BB">maxdb_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">maxdb_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">maxdb_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"CREATE TABLE temp.mycity LIKE hotel.city"</font><font color="#007700">);<br /></font><font color="#0000BB">maxdb_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"INSERT INTO temp.mycity SELECT * FROM hotel.city"</font><font color="#007700">);<br /><br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT name, zip FROM temp.mycity ORDER BY name"</font><font color="#007700">;<br />if (</font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">maxdb_prepare</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* drop table */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">maxdb_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"DROP TABLE temp.mycity"</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* execute query */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">maxdb_stmt_execute</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Error: %s.\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_stmt_error</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">));<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* close statement */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">maxdb_stmt_close</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">maxdb_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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></TD
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><P
>&#13;   The above examples would produce the following output:
  </P
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><TD
><PRE
CLASS="screen"
>Warning: maxdb_stmt_execute(): -4004 POS(23) Unknown table name:MYCITY [42000] &#60;...&#62;
Error: POS(23) Unknown table name:MYCITY.</PRE
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