pg-fetch-all-columns.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
<refentry xml:id="function.pg-fetch-all-columns" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>pg_fetch_all_columns</refname>
  <refpurpose>Fetches all rows in a particular result column as an array</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>pg_fetch_all_columns</methodname>
   <methodparam><type>PgSql\Result</type><parameter>result</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>field</parameter><initializer>0</initializer></methodparam>
  </methodsynopsis>
  <para>
   <function>pg_fetch_all_columns</function> returns an array that
   contains all rows (records) in a particular column of the <classname>PgSql\Result</classname> instance.
  </para>
  &database.fetch-null;
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>result</parameter></term>
     <listitem>
      &pgsql.parameter.result;
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>field</parameter></term>
     <listitem>
      <para>
       Column number. Defaults to the first column if not specified.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   An <type>array</type> with all values in the result column.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     &pgsql.changelog.result-object;
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>pg_fetch_all_columns</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php 
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
  echo "An error occurred.\n";
  exit;
}

$result = pg_query($conn, "SELECT title, name, address FROM authors");
if (!$result) {
  echo "An error occurred.\n";
  exit;
}

// Get an array of all author names
$arr = pg_fetch_all_columns($result, 1);

var_dump($arr);

?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>pg_fetch_all</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>
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