diff --git a/reference/intl/numberformatter.xml b/reference/intl/numberformatter.xml
index 834bf14d8e15..cefb91ad1b9a 100644
--- a/reference/intl/numberformatter.xml
+++ b/reference/intl/numberformatter.xml
@@ -134,25 +134,25 @@
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-away-from-zero">NumberFormatter::ROUND_AWAY_FROM_ZERO</varname>
+     <varname linkend="numberformatter.constants.round-ceiling">NumberFormatter::ROUND_CEILING</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-ceiling">NumberFormatter::ROUND_CEILING</varname>
+     <varname linkend="numberformatter.constants.round-floor">NumberFormatter::ROUND_FLOOR</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-floor">NumberFormatter::ROUND_FLOOR</varname>
+     <varname linkend="numberformatter.constants.round-down">NumberFormatter::ROUND_DOWN</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-down">NumberFormatter::ROUND_DOWN</varname>
+     <varname linkend="numberformatter.constants.round-up">NumberFormatter::ROUND_UP</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
@@ -164,7 +164,7 @@
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-up">NumberFormatter::ROUND_UP</varname>
+     <varname linkend="numberformatter.constants.round-away-from-zero">NumberFormatter::ROUND_AWAY_FROM_ZERO</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
@@ -176,13 +176,13 @@
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-halfdown">NumberFormatter::ROUND_HALFDOWN</varname>
+     <varname linkend="numberformatter.constants.round-halfodd">NumberFormatter::ROUND_HALFODD</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="numberformatter.constants.round-halfodd">NumberFormatter::ROUND_HALFODD</varname>
+     <varname linkend="numberformatter.constants.round-halfdown">NumberFormatter::ROUND_HALFDOWN</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
diff --git a/reference/pcntl/functions/pcntl-waitid.xml b/reference/pcntl/functions/pcntl-waitid.xml
index ff4ffd9a06ca..e0664aef7229 100644
--- a/reference/pcntl/functions/pcntl-waitid.xml
+++ b/reference/pcntl/functions/pcntl-waitid.xml
@@ -10,10 +10,10 @@
   &reftitle.description;
   <methodsynopsis>
    <type>bool</type><methodname>pcntl_waitid</methodname>
-   <methodparam choice="opt"><type>int</type><parameter>idtype</parameter><initializer>P_ALL</initializer></methodparam>
-   <methodparam choice="opt"><type>int</type><parameter>id</parameter><initializer>null</initializer></methodparam>
+   <methodparam choice="opt"><type>int</type><parameter>idtype</parameter><initializer><constant>P_ALL</constant></initializer></methodparam>
+   <methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>id</parameter><initializer>&null;</initializer></methodparam>
    <methodparam choice="opt"><type>array</type><parameter role="reference">info</parameter><initializer>[]</initializer></methodparam>
-   <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer>WEXITED</initializer></methodparam>
+   <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>WEXITED</constant></initializer></methodparam>
   </methodsynopsis>
   <para>
    Obtains status information pertaining to termination, stop, and/or continue
diff --git a/reference/pgsql/functions/pg-select.xml b/reference/pgsql/functions/pg-select.xml
index e63911524e8a..a89e457a2fe9 100644
--- a/reference/pgsql/functions/pg-select.xml
+++ b/reference/pgsql/functions/pg-select.xml
@@ -15,7 +15,7 @@
    <type class="union"><type>array</type><type>string</type><type>false</type></type><methodname>pg_select</methodname>
    <methodparam><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
    <methodparam><type>string</type><parameter>table_name</parameter></methodparam>
-   <methodparam><type>array</type><parameter>conditions</parameter></methodparam>
+   <methodparam choice="opt"><type>array</type><parameter>conditions</parameter><initializer>[]</initializer></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>PGSQL_DML_EXEC</constant></initializer></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>mode</parameter><initializer><constant>PGSQL_ASSOC</constant></initializer></methodparam>
   </methodsynopsis>
@@ -76,6 +76,8 @@
        <para>
         An <type>array</type> whose keys are field names in the table <parameter>table_name</parameter>,
         and whose values are the conditions that a row must meet to be retrieved.
+        As of PHP 8.4.0, when an empty array is provided, no conditions will apply.
+        Previously, the function failed with an empty <parameter>conditions</parameter> argument.
        </para>
       </listitem>
      </varlistentry>
@@ -132,6 +134,12 @@
       </row>
      </thead>
      <tbody>
+      <row>
+       <entry>8.4.0</entry>
+       <entry>
+        <parameter>conditions</parameter> is now optional.
+       </entry>
+      </row>
       &pgsql.changelog.connection-object;
       <row>
        <entry>7.1.0</entry>
diff --git a/reference/xml/functions/xml-parse-into-struct.xml b/reference/xml/functions/xml-parse-into-struct.xml
index faac6b47a674..36cacc7076b1 100644
--- a/reference/xml/functions/xml-parse-into-struct.xml
+++ b/reference/xml/functions/xml-parse-into-struct.xml
@@ -9,7 +9,7 @@
  <refsect1 role="description">
   &reftitle.description;
   <methodsynopsis>
-   <type>int</type><methodname>xml_parse_into_struct</methodname>
+   <type class="union"><type>int</type><type>false</type></type><methodname>xml_parse_into_struct</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
    <methodparam><type>string</type><parameter>data</parameter></methodparam>
    <methodparam><type>array</type><parameter role="reference">values</parameter></methodparam>
diff --git a/reference/xml/functions/xml-set-character-data-handler.xml b/reference/xml/functions/xml-set-character-data-handler.xml
index de5af091eba0..2ce7032b2b2a 100644
--- a/reference/xml/functions/xml-set-character-data-handler.xml
+++ b/reference/xml/functions/xml-set-character-data-handler.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_character_data_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the character data handler function for the XML parser
diff --git a/reference/xml/functions/xml-set-default-handler.xml b/reference/xml/functions/xml-set-default-handler.xml
index 37a702af4aea..4e338558200a 100644
--- a/reference/xml/functions/xml-set-default-handler.xml
+++ b/reference/xml/functions/xml-set-default-handler.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_default_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the default handler function for the XML parser
diff --git a/reference/xml/functions/xml-set-element-handler.xml b/reference/xml/functions/xml-set-element-handler.xml
index 45949acc5e5b..f6b4caf803d8 100644
--- a/reference/xml/functions/xml-set-element-handler.xml
+++ b/reference/xml/functions/xml-set-element-handler.xml
@@ -11,8 +11,8 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_element_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>start_handler</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>end_handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>start_handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>end_handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the element handler functions for the XML <parameter>parser</parameter>.
diff --git a/reference/xml/functions/xml-set-end-namespace-decl-handler.xml b/reference/xml/functions/xml-set-end-namespace-decl-handler.xml
index 67ecb8864423..1743920c94f8 100644
--- a/reference/xml/functions/xml-set-end-namespace-decl-handler.xml
+++ b/reference/xml/functions/xml-set-end-namespace-decl-handler.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_end_namespace_decl_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Set a handler to be called when leaving the scope of a namespace
diff --git a/reference/xml/functions/xml-set-external-entity-ref-handler.xml b/reference/xml/functions/xml-set-external-entity-ref-handler.xml
index dcbb968095a6..1f99f2c7251e 100644
--- a/reference/xml/functions/xml-set-external-entity-ref-handler.xml
+++ b/reference/xml/functions/xml-set-external-entity-ref-handler.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_external_entity_ref_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the external entity reference handler function for the XML parser
diff --git a/reference/xml/functions/xml-set-notation-decl-handler.xml b/reference/xml/functions/xml-set-notation-decl-handler.xml
index 55037f8795de..dee650efbd33 100644
--- a/reference/xml/functions/xml-set-notation-decl-handler.xml
+++ b/reference/xml/functions/xml-set-notation-decl-handler.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_notation_decl_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the notation declaration handler function for the XML parser
diff --git a/reference/xml/functions/xml-set-processing-instruction-handler.xml b/reference/xml/functions/xml-set-processing-instruction-handler.xml
index 25b34c66514b..59536df36b88 100644
--- a/reference/xml/functions/xml-set-processing-instruction-handler.xml
+++ b/reference/xml/functions/xml-set-processing-instruction-handler.xml
@@ -13,7 +13,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_processing_instruction_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the processing instruction (PI) handler function for the XML parser
diff --git a/reference/xml/functions/xml-set-start-namespace-decl-handler.xml b/reference/xml/functions/xml-set-start-namespace-decl-handler.xml
index 445b50397567..ca08b165e437 100644
--- a/reference/xml/functions/xml-set-start-namespace-decl-handler.xml
+++ b/reference/xml/functions/xml-set-start-namespace-decl-handler.xml
@@ -13,7 +13,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_start_namespace_decl_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Set a handler to be called when a namespace is declared. Namespace
diff --git a/reference/xml/functions/xml-set-unparsed-entity-decl-handler.xml b/reference/xml/functions/xml-set-unparsed-entity-decl-handler.xml
index ecd34e125a08..bf8ac9a8bd22 100644
--- a/reference/xml/functions/xml-set-unparsed-entity-decl-handler.xml
+++ b/reference/xml/functions/xml-set-unparsed-entity-decl-handler.xml
@@ -13,7 +13,7 @@
   <methodsynopsis>
    <type>true</type><methodname>xml_set_unparsed_entity_decl_handler</methodname>
    <methodparam><type>XMLParser</type><parameter>parser</parameter></methodparam>
-   <methodparam><type>callable</type><parameter>handler</parameter></methodparam>
+   <methodparam><type class="union"><type>callable</type><type>string</type><type>null</type></type><parameter>handler</parameter></methodparam>
   </methodsynopsis>
   <para>
    Sets the unparsed entity declaration handler function for the XML parser