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><H1
><A
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>pg_send_prepare</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN186927"
></A
><P
>    (PHP 5 &#62;= 5.1.0RC1)</P
>pg_send_prepare&nbsp;--&nbsp;Sends a request to create a prepared statement with the given parameters, without waiting for completion.</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN186930"
></A
><H2
>说明</H2
>bool <B
CLASS="methodname"
>pg_send_prepare</B
> ( resource connection, string stmtname, string query )<BR
></BR
><P
>&#13;    Sends a request to create a prepared statement with the given parameters, 
    without waiting for completion.
  </P
><P
>&#13;    This is an asynchronous version of <A
HREF="function.pg-prepare.html"
><B
CLASS="function"
>pg_prepare()</B
></A
>: it returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
> if it was able to 
    dispatch the request, and <TT
CLASS="constant"
><B
>FALSE</B
></TT
> if not. After a successful call, call 
    <A
HREF="function.pg-get-result.html"
><B
CLASS="function"
>pg_get_result()</B
></A
> to determine whether the server successfully created the 
    prepared statement. The function's parameters are handled identically to 
    <A
HREF="function.pg-prepare.html"
><B
CLASS="function"
>pg_prepare()</B
></A
>. Like <A
HREF="function.pg-prepare.html"
><B
CLASS="function"
>pg_prepare()</B
></A
>, it will not work 
    on pre-7.4 versions of PostgreSQL.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN186952"
></A
><H2
>参数</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>connection</CODE
></DT
><DD
><P
>&#13;       PostgreSQL database connection resource.  When 
       <CODE
CLASS="parameter"
>connection</CODE
> is not present, the default connection 
       is used. The default connection is the last connection made by 
       <A
HREF="function.pg-connect.html"
><B
CLASS="function"
>pg_connect()</B
></A
> or <A
HREF="function.pg-pconnect.html"
><B
CLASS="function"
>pg_pconnect()</B
></A
>.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>stmtname</CODE
></DT
><DD
><P
>&#13;       The name to give the prepared statement.  Must be unique per-connection.  If
       "" is specified, then an unnamed statement is created, overwriting any
       previously defined unnamed statement.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>query</CODE
></DT
><DD
><P
>&#13;       The parameterised SQL statement.  Must contain only a single statement.
       (multiple statements separated by semi-colons are not allowed.)  If any parameters 
       are used, they are referred to as $1, $2, etc.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN186974"
></A
><H2
>返回值</H2
><P
>Returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
> on success, <TT
CLASS="constant"
><B
>FALSE</B
></TT
> on failure.  Use <A
HREF="function.pg-get-result.html"
><B
CLASS="function"
>pg_get_result()</B
></A
>
  to determine the query result.</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN186980"
></A
><H2
>范例</H2
><P
>&#13;   <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN186983"
></A
><P
><B
>例 1. Using <B
CLASS="function"
>pg_send_prepare()</B
></B
></P
><TABLE
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />&nbsp;&nbsp;$dbconn </font><font color="#007700">= </font><font color="#0000BB">pg_connect</font><font color="#007700">(</font><font color="#DD0000">"dbname=publisher"</font><font color="#007700">) or die(</font><font color="#DD0000">"Could not connect"</font><font color="#007700">);<br /><br />&nbsp;&nbsp;</font><font color="#FF8000">// Prepare a query for execution<br />&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">pg_connection_busy</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">pg_send_prepare</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"my_query"</font><font color="#007700">, </font><font color="#DD0000">'SELECT * FROM shops WHERE name = $1'</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$res1 </font><font color="#007700">= </font><font color="#0000BB">pg_get_result</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">);<br />&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;</font><font color="#FF8000">// Execute the prepared query.&nbsp;&nbsp;Note that it is not necessary to escape<br />&nbsp;&nbsp;// the string "Joe's Widgets" in any way<br />&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">pg_connection_busy</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">pg_send_execute</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"my_query"</font><font color="#007700">, array(</font><font color="#DD0000">"Joe's Widgets"</font><font color="#007700">));<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$res2 </font><font color="#007700">= </font><font color="#0000BB">pg_get_result</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">);<br />&nbsp;&nbsp;}<br />&nbsp;&nbsp;<br />&nbsp;&nbsp;</font><font color="#FF8000">// Execute the same prepared query, this time with a different parameter<br />&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">pg_connection_busy</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">pg_send_execute</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"my_query"</font><font color="#007700">, array(</font><font color="#DD0000">"Clothes Clothes Clothes"</font><font color="#007700">));<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$res3 </font><font color="#007700">= </font><font color="#0000BB">pg_get_result</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">);<br />&nbsp;&nbsp;}<br />&nbsp;&nbsp;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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></TD
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>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN186987"
></A
><H2
>参见</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.pg-connect.html"
><B
CLASS="function"
>pg_connect()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-pconnect.html"
><B
CLASS="function"
>pg_pconnect()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-execute.html"
><B
CLASS="function"
>pg_execute()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-send-execute.html"
><B
CLASS="function"
>pg_send_execute()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-send-query-params.html"
><B
CLASS="function"
>pg_send_query_params()</B
></A
></TD
></TR
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></P
>
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