pg-send-execute.xml

<?xml version="1.0" encoding="utf-8"?>
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<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
<refentry xml:id="function.pg-send-execute" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>pg_send_execute</refname>
  <refpurpose>Sends a request to execute a prepared statement with given parameters, without waiting for the result(s)</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>int</type><type>bool</type></type><methodname>pg_send_execute</methodname>
   <methodparam><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
   <methodparam><type>string</type><parameter>statement_name</parameter></methodparam>
   <methodparam><type>array</type><parameter>params</parameter></methodparam>
  </methodsynopsis>
  <para>
    Sends a request to execute a prepared statement with given parameters, 
    without waiting for the result(s).
  </para>
  <para>
    This is similar to <function>pg_send_query_params</function>, but the command to be executed is specified 
    by naming a previously-prepared statement, instead of giving a query string. The 
    function's parameters are handled identically to <function>pg_execute</function>. 
    Like <function>pg_execute</function>, it will not work on pre-7.4 versions of
    PostgreSQL.
  </para>
 </refsect1>

<refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>connection</parameter></term>
     <listitem>
      &pgsql.parameter.connection;
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>statement_name</parameter></term>
     <listitem>
      <para>
       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 <function>pg_prepare</function>, 
       <function>pg_send_prepare</function> or a <literal>PREPARE</literal> SQL
       command.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>params</parameter></term>
     <listitem>
      <para>
        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.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; on success, &false; or <literal>0</literal> on failure.  Use <function>pg_get_result</function>
   to determine the query result.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     &pgsql.changelog.connection-object;
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Using <function>pg_send_execute</function></title>
    <programlisting role="php">
<![CDATA[
<?php
  $dbconn = pg_connect("dbname=publisher") or die("Could not connect");

  // Prepare a query for execution
  if (!pg_connection_busy($dbconn)) {
    pg_send_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');
    $res1 = pg_get_result($dbconn);
  }

  // Execute the prepared query.  Note that it is not necessary to escape
  // the string "Joe's Widgets" in any way
  if (!pg_connection_busy($dbconn)) {
    pg_send_execute($dbconn, "my_query", array("Joe's Widgets"));
    $res2 = pg_get_result($dbconn);
  }
  
  // Execute the same prepared query, this time with a different parameter
  if (!pg_connection_busy($dbconn)) {
    pg_send_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));
    $res3 = pg_get_result($dbconn);
  }
  
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>
 
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>pg_prepare</function></member>
    <member><function>pg_send_prepare</function></member>
    <member><function>pg_execute</function></member>    
   </simplelist>
  </para>
 </refsect1>
</refentry>
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