php-doc-en/reference/pdo/functions/PDOStatement-fetch.xml

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  <refentry id="function.PDOStatement-fetch">
   <refnamediv>
    <refname>PDOStatement::fetch</refname>
    <refpurpose>
     Fetches the next row from a result set
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <methodsynopsis>
     <type>array</type><methodname>PDOStatement::fetch</methodname>
     <methodparam choice="opt"><type>int</type><parameter>fetch_style</parameter></methodparam>
    </methodsynopsis>

    &warn.experimental.func;
    <para>
     Fetches a row from a result set associated with a PDOStatement object.
    </para>
    <para>
     <parameter>fetch_style</parameter> can be one of the following values:
     <itemizedlist>
      <listitem><para>
       <literal>PDO_FETCH_ASSOC</literal>: returns an array indexed by column
       name as returned in your result set
      </para></listitem>
      <listitem><para>
       <literal>PDO_FETCH_BOTH</literal> (default): returns an array indexed by
       both column name and column number as returned in your result set
      </para></listitem>
      <listitem><para>
       <literal>PDO_FETCH_BOUND</literal>: returns &true; and assigns the
       values of the columns in your result set to the PHP variables to which
       they were bound with the <function>PDO::bindParam</function> method
      </para></listitem>
      <listitem><para>
       <literal>PDO_FETCH_LAZY</literal>: combines
       <literal>PDO_FETCH_BOTH</literal> and <literal>PDO_FETCH_OBJ</literal>,
       creating the object variable names as they are accessed
      </para></listitem>
      <listitem><para>
       <literal>PDO_FETCH_OBJ</literal>: returns an anonymous object with
       property names that correspond to the column names returned in your
       result set
      </para></listitem>
      <listitem><para>
       <literal>PDO_FETCH_NUM</literal>: returns an array indexed by column
       number as returned in your result set, starting at column 0
      </para></listitem>
     </itemizedlist>
    </para>

    <example><title>Fetching rows using different fetch styles</title>
     <programlisting role="php">
<![CDATA[
<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();

/* Exercise PDOStatement::fetch styles */
print("PDO_FETCH_ASSOC: ");
print("Return next row as an array indexed by column name\n");
$result = $sth->fetch(PDO_FETCH_ASSOC);
print_r($result);
print("\n");

print("PDO_FETCH_BOTH: ");
print("Return next row as an array indexed by both column name and number\n");
$result = $sth->fetch(PDO_FETCH_BOTH);
print_r($result);
print("\n");

print("PDO_FETCH_LAZY: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO_FETCH_LAZY);
print_r($result);
print("\n");

print("PDO_FETCH_OBJ: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO_FETCH_OBJ);
print $result->NAME;
print("\n");
?>
]]>
     </programlisting>
    </example>
    &example.outputs;
    <screen>
<![CDATA[
PDO_FETCH_ASSOC: Return next row as an array indexed by column name
Array
(
    [NAME] => apple
    [COLOUR] => red
)

PDO_FETCH_BOTH: Return next row as an array indexed by both column name and number
Array
(
    [NAME] => banana
    [0] => banana
    [COLOUR] => yellow
    [1] => yellow
)

PDO_FETCH_LAZY: Return next row as an anonymous object with column names as properties
PDORow Object
(
    [NAME] => orange
    [COLOUR] => orange
)

PDO_FETCH_OBJ: Return next row as an anonymous object with column names as properties
kiwi
]]>
    </screen>

   </refsect1>
  </refentry>

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