diff --git a/reference/pgsql/constants.xml b/reference/pgsql/constants.xml
index d3dc79b3721e..f28f4d2816d1 100644
--- a/reference/pgsql/constants.xml
+++ b/reference/pgsql/constants.xml
@@ -251,6 +251,22 @@
     </simpara>
    </listitem>
   </varlistentry>
+  <varlistentry xml:id="constant.pgsql-tuples-chunk">
+   <term>
+    <constant>PGSQL_TUPLES_CHUNK</constant>
+    (<type>int</type>)
+   </term>
+   <listitem>
+    <simpara>
+     Returned by <function>pg_result_status</function>.
+     Indicates the successful completion of a command returning data in chunked mode.
+     Returned for <literal>SELECT</literal> commands when
+     <function>pg_set_chunked_rows_size</function> is set.
+     The result set is divided into multiple chunks, each containing a predefined number of rows.
+     Available as of PHP 8.4.0 and libpq 17.
+    </simpara>
+   </listitem>
+  </varlistentry>
   <varlistentry xml:id="constant.pgsql-copy-out">
    <term>
     <constant>PGSQL_COPY_OUT</constant>
diff --git a/reference/pgsql/functions/pg-result-status.xml b/reference/pgsql/functions/pg-result-status.xml
index cd1ee4a0d25b..1b7dab983c9c 100644
--- a/reference/pgsql/functions/pg-result-status.xml
+++ b/reference/pgsql/functions/pg-result-status.xml
@@ -51,7 +51,7 @@
   &reftitle.returnvalues;
   <para>
    Possible return values are <constant>PGSQL_EMPTY_QUERY</constant>,
-   <constant>PGSQL_COMMAND_OK</constant>, <constant>PGSQL_TUPLES_OK</constant>, <constant>PGSQL_COPY_OUT</constant>,
+   <constant>PGSQL_COMMAND_OK</constant>, <constant>PGSQL_TUPLES_OK</constant>, <constant>PGSQL_TUPLES_CHUNK</constant>, <constant>PGSQL_COPY_OUT</constant>,
    <constant>PGSQL_COPY_IN</constant>, <constant>PGSQL_BAD_RESPONSE</constant>, <constant>PGSQL_NONFATAL_ERROR</constant> and
    <constant>PGSQL_FATAL_ERROR</constant> if <constant>PGSQL_STATUS_LONG</constant> is
    specified.  Otherwise, a <type>string</type> containing the PostgreSQL command tag is returned.
diff --git a/reference/pgsql/functions/pg-set-chunked-rows-size.xml b/reference/pgsql/functions/pg-set-chunked-rows-size.xml
new file mode 100644
index 000000000000..4a459b362130
--- /dev/null
+++ b/reference/pgsql/functions/pg-set-chunked-rows-size.xml
@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- $Revision$ -->
+<refentry xml:id="function.pg-set-chunked-rows-size" xmlns="http://docbook.org/ns/docbook">
+ <refnamediv>
+  <refname>pg_set_chunked_rows_size</refname>
+  <refpurpose>Set the query results to be retrieved in chunk mode</refpurpose>
+ </refnamediv>
+
+ <refsect1 role="description">
+  &reftitle.description;
+  <methodsynopsis>
+   <type>bool</type><methodname>pg_set_chunked_rows_size</methodname>
+   <methodparam><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
+   <methodparam><type>int</type><parameter>size</parameter></methodparam>
+  </methodsynopsis>
+  <simpara>
+   Set the query results to be retrieved in chunk mode.
+   The query results returned afterward will be divided into multiple chunks,
+   each containing up to <parameter>size</parameter> rows.
+   This function must be called before retrieving results with <function>pg_get_result</function>.
+   This function is only available when libpq is version 17 or higher.
+  </simpara>
+ </refsect1>
+
+ <refsect1 role="parameters">
+  &reftitle.parameters;
+  <variablelist>
+    <varlistentry>
+     <term><parameter>connection</parameter></term>
+     <listitem>
+      &pgsql.parameter.connection;
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>size</parameter></term>
+     <listitem>
+      <simpara>
+       The number of rows to be retrieved in each chunk.
+      </simpara>
+     </listitem>
+    </varlistentry>
+  </variablelist>
+ </refsect1>
+
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <simpara>
+   &return.success;
+  </simpara>
+ </refsect1>
+
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <simpara>
+   If <parameter>size</parameter> is less than <literal>1</literal>,
+   a <classname>ValueError</classname> will be thrown.
+  </simpara>
+ </refsect1>
+
+ <refsect1 role="examples">
+  &reftitle.examples;
+  <example>
+   <title><function>pg_result_memory_size</function> example</title>
+   <programlisting role="php">
+<![CDATA[
+<?php
+
+$conn = pg_connect($conn_str);
+
+for ($i = 0; $i < 10; $i ++) {
+  pg_query($conn, "INSERT INTO users DEFAULT VALUES");
+}
+
+pg_send_query($conn, "SELECT * FROM users");
+pg_set_chunked_rows_size($conn, 1);
+
+$result = pg_get_result($conn);
+var_dump(pg_num_rows($result));
+
+// No effect after the result is retrieved
+var_dump(pg_set_chunked_rows_size($conn, 10));
+]]>
+   </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+int(1)
+bool(false)
+]]>
+   </screen>
+  </example>
+ </refsect1>
+
+ <refsect1 role="seealso">
+  &reftitle.seealso;
+  <simplelist>
+   <member><function>pg_get_result</function></member>
+   <member><function>pg_result_status</function></member>
+  </simplelist>
+ </refsect1>
+</refentry>
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"~/.phpdoc/manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->
diff --git a/reference/pgsql/versions.xml b/reference/pgsql/versions.xml
index 2232618fabee..871df8159879 100644
--- a/reference/pgsql/versions.xml
+++ b/reference/pgsql/versions.xml
@@ -88,6 +88,7 @@
  <function name="pg_set_client_encoding" from="PHP 4 &gt;= 4.0.3, PHP 5, PHP 7, PHP 8"/>
  <function name="pg_set_error_context_visibility" from="PHP 8 &gt;= 8.3.0"/>
  <function name="pg_set_error_verbosity" from="PHP 5 &gt;= 5.1.0, PHP 7, PHP 8"/>
+ <function name="pg_set_chunked_rows_size" from="PHP 8 &gt;= 8.4.0"/>
  <function name="pg_socket" from="PHP 5 &gt;= 5.6.0, PHP 7, PHP 8"/>
  <function name="pg_trace" from="PHP 4 &gt;= 4.0.1, PHP 5, PHP 7, PHP 8"/>
  <function name="pg_transaction_status" from="PHP 5 &gt;= 5.1.0, PHP 7, PHP 8"/>