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

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><H1
><A
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></A
>mysqli_query</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN135362"
></A
><P
>    (PHP 5)</P
>mysqli_query<P
>    (no version information, might be only in CVS)</P
>mysqli-&#62;query()&nbsp;--&nbsp;Performs a query on the database</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN135366"
></A
><H2
>Descrição</H2
><P
>Procedural style:</P
>mixed <B
CLASS="methodname"
>mysqli_query</B
> ( mysqli link, string query [, int resultmode] )<BR
></BR
><P
>Object oriented style (method):</P
>class <B
CLASS="classname"
>mysqli</B
> { <BR
></BR
>mixed <B
CLASS="methodname"
>query</B
> ( string query [, int resultmode] )<BR
></BR
>}<P
>&#13;   Performs a <CODE
CLASS="parameter"
>query</CODE
> against the database.
  </P
><P
>&#13;   Functionally, using this function is identical to calling 
   <A
HREF="function.mysqli-real-query.html"
><B
CLASS="function"
>mysqli_real_query()</B
></A
> followed either by 
   <A
HREF="function.mysqli-use-result.html"
><B
CLASS="function"
>mysqli_use_result()</B
></A
> or 
   <A
HREF="function.mysqli-store-result.html"
><B
CLASS="function"
>mysqli_store_result()</B
></A
>.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN135400"
></A
><H2
>Parâmetros</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>&#13; link</CODE
></DT
><DD
><P
>Apenas para estilo de procedimento: Um identificador de conexão
 retornado por <A
HREF="function.mysqli-connect.html"
><B
CLASS="function"
>mysqli_connect()</B
></A
> or <A
HREF="function.mysqli-init.html"
><B
CLASS="function"
>mysqli_init()</B
></A
>
 </P
></DD
><DT
><CODE
CLASS="parameter"
>query</CODE
></DT
><DD
><P
>&#13;       The query string.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>resultmode</CODE
></DT
><DD
><P
>&#13;       Either the constant <TT
CLASS="constant"
><B
>MYSQLI_USE_RESULT</B
></TT
> or
       <TT
CLASS="constant"
><B
>MYSQLI_STORE_RESULT</B
></TT
> depending on the desired
       behavior. By default, <TT
CLASS="constant"
><B
>MYSQLI_STORE_RESULT</B
></TT
> is used.
      </P
><P
>&#13;       If you use <TT
CLASS="constant"
><B
>MYSQLI_USE_RESULT</B
></TT
> all subsequent calls
       will return error <TT
CLASS="literal"
>Commands out of sync</TT
> unless you
       call <A
HREF="function.mysqli-free-result.html"
><B
CLASS="function"
>mysqli_free_result()</B
></A
>
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN135428"
></A
><H2
>Valores de retornado</H2
><P
>&#13;   Retorna <TT
CLASS="constant"
><B
>TRUE</B
></TT
> em caso de sucesso ou <TT
CLASS="constant"
><B
>FALSE</B
></TT
> em falhas. For <TT
CLASS="literal"
>SELECT, SHOW, DESCRIBE</TT
> or
   <TT
CLASS="literal"
>EXPLAIN</TT
> <B
CLASS="function"
>mysqli_query()</B
> will return
   a result object.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN135436"
></A
><H2
>Exemplos</H2
><TABLE
WIDTH="100%"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN135438"
></A
><P
><B
>Exemplo 1. Object oriented style</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#FF8000">/* Create table doesn't return a resultset */<br /></font><font color="#007700">if (</font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"CREATE TEMPORARY TABLE myCity LIKE City"</font><font color="#007700">) === </font><font color="#0000BB">TRUE</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Table myCity successfully created.\n"</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* Select queries return a resultset */<br /></font><font color="#007700">if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"SELECT Name FROM City LIMIT 10"</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Select returned %d rows.\n"</font><font color="#007700">, </font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">num_rows</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* If we have to retrieve large amount of data we use MYSQLI_USE_RESULT */<br /></font><font color="#007700">if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"SELECT * FROM City"</font><font color="#007700">, </font><font color="#0000BB">MYSQLI_USE_RESULT</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* Note, that we can't execute any functions which interact with the<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;server until result set was closed. All calls will return an<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'out of sync' error */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#DD0000">"SET @a:='this will not work'"</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Error: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">error</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#0000BB">$mysqli</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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></TD
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BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN135441"
></A
><P
><B
>Exemplo 2. Procedural style</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">mysqli_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#FF8000">/* Create table doesn't return a resultset */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"CREATE TEMPORARY TABLE myCity LIKE City"</font><font color="#007700">) === </font><font color="#0000BB">TRUE</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Table myCity successfully created.\n"</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* Select queries return a resultset */<br /></font><font color="#007700">if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SELECT Name FROM City LIMIT 10"</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Select returned %d rows.\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_num_rows</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">));<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* If we have to retrieve large amount of data we use MYSQLI_USE_RESULT */<br /></font><font color="#007700">if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SELECT * FROM City"</font><font color="#007700">, </font><font color="#0000BB">MYSQLI_USE_RESULT</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* Note, that we can't execute any functions which interact with the<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;server until result set was closed. All calls will return an<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'out of sync' error */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"SET @a:='this will not work'"</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Error: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_error</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">));<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
><P
>O exemplo acima irá imprimir:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>Table myCity successfully created.
Select returned 10 rows.
Error: Commands out of sync;  You can't run this command now</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN135446"
></A
><H2
>Veja também</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.mysqli-real-query.html"
><B
CLASS="function"
>mysqli_real_query()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-multi-query.html"
><B
CLASS="function"
>mysqli_multi_query()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-free-result.html"
><B
CLASS="function"
>mysqli_free_result()</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.mysqli-prepare.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Principal</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.mysqli-real-connect.html"
ACCESSKEY="N"
>Próxima</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>mysqli_prepare</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.mysqli.html"
ACCESSKEY="U"
>Acima</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>mysqli_real_connect</TD
></TR
></TABLE
></DIV
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>

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