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><H1
><A
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></A
>pg_execute</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN184997"
></A
><P
> (PHP 5 >= 5.1.0RC1)</P
>pg_execute -- Sends a request to execute a prepared statement with given parameters, and waits for the result.</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN185000"
></A
><H2
>说明</H2
>resource <B
CLASS="methodname"
>pg_execute</B
> ( resource connection, string stmtname, array params )<BR
></BR
>resource <B
CLASS="methodname"
>pg_execute</B
> ( string stmtname, array params )<BR
></BR
><P
> Sends a request to execute a prepared statement with given parameters, and
waits for the result.
</P
><P
> <B
CLASS="function"
>pg_execute()</B
> is like <A
HREF="function.pg-query-params.html"
><B
CLASS="function"
>pg_query_params()</B
></A
>,
but the command to be executed is
specified by naming a previously-prepared statement, instead of giving a
query string. This feature allows commands that will be used repeatedly to
be parsed and planned just once, rather than each time they are executed.
The statement must have been prepared previously in the current session.
<B
CLASS="function"
>pg_execute()</B
> is supported only against PostgreSQL 7.4 or
higher connections; it will fail when using earlier versions.
</P
><P
> The parameters are identical to <A
HREF="function.pg-query-params.html"
><B
CLASS="function"
>pg_query_params()</B
></A
>, except that the name of a
prepared statement is given instead of a query string.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN185030"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>connection</CODE
></DT
><DD
><P
> 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
> The name of the prepared statement to execute. if
"" is specified, then the unnamed statement is executed. The name must have
been previously prepared using <A
HREF="function.pg-prepare.html"
><B
CLASS="function"
>pg_prepare()</B
></A
>,
<A
HREF="function.pg-send-prepare.html"
><B
CLASS="function"
>pg_send_prepare()</B
></A
> or a <TT
CLASS="literal"
>PREPARE</TT
> SQL
command.
</P
></DD
><DT
><CODE
CLASS="parameter"
>params</CODE
></DT
><DD
><P
> An array of parameter values to substitute for the $1, $2, etc. placeholders
in the original prepared query string. The number of elements in the array
must match the number of placeholders.
</P
><DIV
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><P
></P
><TABLE
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><TR
><TD
ALIGN="CENTER"
><B
>警告</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
> Elements are converted to strings by calling this function.
</P
></TD
></TR
></TABLE
></DIV
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN185057"
></A
><H2
>返回值</H2
><P
> A query result resource on success, or <TT
CLASS="constant"
><B
>FALSE</B
></TT
> on failure.</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN185061"
></A
><H2
>范例</H2
><P
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><TD
><DIV
CLASS="example"
><A
NAME="AEN185064"
></A
><P
><B
>例 1. Using <B
CLASS="function"
>pg_execute()</B
></B
></P
><TABLE
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><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br /></font><font color="#FF8000">// Connect to a database named "mary"<br /></font><font color="#0000BB">$dbconn </font><font color="#007700">= </font><font color="#0000BB">pg_connect</font><font color="#007700">(</font><font color="#DD0000">"dbname=mary"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// Prepare a query for execution<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">pg_prepare</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"my_query"</font><font color="#007700">, </font><font color="#DD0000">'SELECT * FROM shops WHERE name = $1'</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// Execute the prepared query. Note that it is not necessary to escape<br />// the string "Joe's Widgets" in any way<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">pg_execute</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">, </font><font color="#DD0000">"my_query"</font><font color="#007700">, array(</font><font color="#DD0000">"Joe's Widgets"</font><font color="#007700">));<br /><br /></font><font color="#FF8000">// Execute the same prepared query, this time with a different parameter<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">pg_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 /><br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
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></DIV
></TD
></TR
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>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN185068"
></A
><H2
>参见</H2
><P
> <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.pg-prepare.html"
><B
CLASS="function"
>pg_prepare()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-send-prepare.html"
><B
CLASS="function"
>pg_send_prepare()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.pg-query-params.html"
><B
CLASS="function"
>pg_query_params()</B
></A
></TD
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></P
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