diff --git a/reference/pgsql/functions/pg-affected-rows.xml b/reference/pgsql/functions/pg-affected-rows.xml
index ccbb6f7fc631..b3cb0fc9d3d3 100644
--- a/reference/pgsql/functions/pg-affected-rows.xml
+++ b/reference/pgsql/functions/pg-affected-rows.xml
@@ -20,8 +20,7 @@
    queries. 
   </para>
   <para>
-   Since PostgreSQL 9.0 and above, the server returns the number of 
-   SELECTed rows. Older PostgreSQL return 0 for SELECT.
+   The server also returns the number of SELECTed rows.
   </para>
   <note>
    <para>
diff --git a/reference/pgsql/functions/pg-client-encoding.xml b/reference/pgsql/functions/pg-client-encoding.xml
index e4e8e4362fc8..9278c991c33f 100644
--- a/reference/pgsql/functions/pg-client-encoding.xml
+++ b/reference/pgsql/functions/pg-client-encoding.xml
@@ -24,8 +24,7 @@
   </para>
   <note>
    <para>
-    This function requires PostgreSQL 7.0 or
-    higher. If libpq is compiled without multibyte encoding support,
+    If libpq is compiled without multibyte encoding support,
     <function>pg_client_encoding</function> always returns
     <literal>SQL_ASCII</literal>. Supported encoding depends on PostgreSQL
     version.  Refer to the PostgreSQL Documentation supported encodings.
diff --git a/reference/pgsql/functions/pg-escape-identifier.xml b/reference/pgsql/functions/pg-escape-identifier.xml
index 4c7838e255db..07c3af7950ca 100644
--- a/reference/pgsql/functions/pg-escape-identifier.xml
+++ b/reference/pgsql/functions/pg-escape-identifier.xml
@@ -29,12 +29,6 @@
    type fields, <function>pg_escape_bytea</function> must be used
    instead.
   </para>
-  <note>
-   <para>
-    This function has internal escape code and can also be used with
-    PostgreSQL 8.4 or less.
-    </para>
-  </note>
  </refsect1>
 
 <refsect1 role="parameters">
diff --git a/reference/pgsql/functions/pg-escape-literal.xml b/reference/pgsql/functions/pg-escape-literal.xml
index dd62cd67c16c..9750270d49fd 100644
--- a/reference/pgsql/functions/pg-escape-literal.xml
+++ b/reference/pgsql/functions/pg-escape-literal.xml
@@ -27,12 +27,6 @@
    instead. For escaping identifiers (e.g. table, field
    names), <function>pg_escape_identifier</function> must be used.
   </para>
-  <note>
-   <para>
-    This function has internal escape code and can also be used with
-    PostgreSQL 8.4 or less.
-    </para>
-  </note>
  </refsect1>
 
 <refsect1 role="parameters">
diff --git a/reference/pgsql/functions/pg-escape-string.xml b/reference/pgsql/functions/pg-escape-string.xml
index 78b710b0d4dd..91db49522ec5 100644
--- a/reference/pgsql/functions/pg-escape-string.xml
+++ b/reference/pgsql/functions/pg-escape-string.xml
@@ -27,11 +27,6 @@
    instead. <function>pg_escape_identifier</function> must be used to
    escape identifiers (e.g. table names, field names)
   </para>
-  <note>
-   <para>
-    This function requires PostgreSQL 7.2 or later.
-    </para>
-  </note>
  </refsect1>
 
 <refsect1 role="parameters">
diff --git a/reference/pgsql/functions/pg-execute.xml b/reference/pgsql/functions/pg-execute.xml
index bb5469ad471b..de68827fa1aa 100644
--- a/reference/pgsql/functions/pg-execute.xml
+++ b/reference/pgsql/functions/pg-execute.xml
@@ -26,8 +26,6 @@
     query string. This feature allows commands that will be used repeatedly to 
     be parsed and planned just once, rather than each time they are executed. 
     The statement must have been prepared previously in the current session. 
-    <function>pg_execute</function> is supported only against PostgreSQL 7.4 or
-    higher connections; it will fail when using earlier versions.
   </para>
   <para>
     The parameters are identical to <function>pg_query_params</function>, except that the name of a 
diff --git a/reference/pgsql/functions/pg-lo-create.xml b/reference/pgsql/functions/pg-lo-create.xml
index 94c8defd760a..93898301c5cf 100644
--- a/reference/pgsql/functions/pg-lo-create.xml
+++ b/reference/pgsql/functions/pg-lo-create.xml
@@ -22,11 +22,9 @@
    <function>pg_lo_create</function> creates a large
    object and returns the <varname>OID</varname> of the large
    object.  PostgreSQL access modes
-   <constant>INV_READ</constant>, <constant>INV_WRITE</constant>, and 
-   <constant>INV_ARCHIVE</constant> are not supported, the
-   object is created always with both read and write
-   access. <constant>INV_ARCHIVE</constant> has been removed from PostgreSQL itself
-   (version 6.3 and above).
+   <constant>INV_READ</constant> and <constant>INV_WRITE</constant>
+   are not supported, the object is created always with both read and write
+   access.
   </para>
   <para>
    To use the large object interface, it is necessary to
@@ -60,9 +58,7 @@
       <para>
        If an <parameter>object_id</parameter> is given the function
        will try to create a large object with this id, else a free
-       object id is assigned by the server. The parameter
-       relies on functionality that first
-       appeared in PostgreSQL 8.1.
+       object id is assigned by the server.
       </para>
      </listitem>
     </varlistentry>
diff --git a/reference/pgsql/functions/pg-parameter-status.xml b/reference/pgsql/functions/pg-parameter-status.xml
index fa58feed98ed..24c22a987190 100644
--- a/reference/pgsql/functions/pg-parameter-status.xml
+++ b/reference/pgsql/functions/pg-parameter-status.xml
@@ -23,30 +23,14 @@
     parameter if known, or &false; if the parameter is not known.
   </para>
   <para>
-    Parameters reported as of PostgreSQL 8.0 include <literal>server_version</literal>, 
-    <literal>server_encoding</literal>, <literal>client_encoding</literal>, 
-    <literal>is_superuser</literal>, <literal>session_authorization</literal>, 
+    Parameters reported by the server include <literal>server_version</literal>,
+    <literal>server_encoding</literal>, <literal>client_encoding</literal>,
+    <literal>is_superuser</literal>, <literal>session_authorization</literal>,
     <literal>DateStyle</literal>, <literal>TimeZone</literal>, and <literal>integer_datetimes</literal>.
-    (<literal>server_encoding</literal>, <literal>TimeZone</literal>, and 
-    <literal>integer_datetimes</literal> were not reported by releases before 8.0.) Note that 
-    <literal>server_version</literal>, <literal>server_encoding</literal> and <literal>integer_datetimes</literal> 
+    Note that
+    <literal>server_version</literal>, <literal>server_encoding</literal> and <literal>integer_datetimes</literal>
     cannot change after PostgreSQL startup.
   </para>
-  <para>
-    PostgreSQL 7.3 or lower servers do not report parameter settings,
-    <function>pg_parameter_status</function>
-    includes logic to obtain values for <literal>server_version</literal> and 
-    <literal>client_encoding</literal>
-    anyway. Applications are encouraged to use <function>pg_parameter_status</function> rather than ad 
-    hoc code to determine these values.
-  </para>
-  <caution>
-    <para>
-      On a pre-7.4
-      PostgreSQL server, changing <literal>client_encoding</literal> via <literal>SET</literal> after connection startup will 
-      not be reflected by <function>pg_parameter_status</function>.
-     </para>
-  </caution>
  </refsect1>
 
  <refsect1 role="parameters">
diff --git a/reference/pgsql/functions/pg-prepare.xml b/reference/pgsql/functions/pg-prepare.xml
index fdc1e1fc3d6f..0a9cda69f8fd 100644
--- a/reference/pgsql/functions/pg-prepare.xml
+++ b/reference/pgsql/functions/pg-prepare.xml
@@ -23,8 +23,6 @@
    <function>pg_execute</function> or <function>pg_send_execute</function>.
    This feature allows commands that will be used repeatedly to
    be parsed and planned just once, rather than each time they are executed.
-   <function>pg_prepare</function> is supported only against PostgreSQL 7.4 or
-   higher connections; it will fail when using earlier versions.
   </para>
   <para>
    The function creates a prepared statement named <parameter>stmtname</parameter> from the <parameter>query</parameter>
diff --git a/reference/pgsql/functions/pg-query-params.xml b/reference/pgsql/functions/pg-query-params.xml
index 951d18bd6e7c..eaf82eee1e07 100644
--- a/reference/pgsql/functions/pg-query-params.xml
+++ b/reference/pgsql/functions/pg-query-params.xml
@@ -23,8 +23,6 @@
     <function>pg_query_params</function> is like <function>pg_query</function>, 
     but offers additional functionality: parameter 
     values can be specified separately from the command string proper. 
-    <function>pg_query_params</function> is supported only against PostgreSQL 7.4 or
-    higher connections; it will fail when using earlier versions.
   </para>
   <para>
     If parameters are used, they are referred to in the
diff --git a/reference/pgsql/functions/pg-result-error-field.xml b/reference/pgsql/functions/pg-result-error-field.xml
index 5f1a10478421..ce4e0c10490a 100644
--- a/reference/pgsql/functions/pg-result-error-field.xml
+++ b/reference/pgsql/functions/pg-result-error-field.xml
@@ -16,8 +16,7 @@
   </methodsynopsis>
   <para>
    <function>pg_result_error_field</function> returns one of the detailed error message
-   fields associated with <parameter>result</parameter> instance. It is only available
-   against a PostgreSQL 7.4 or above server.  The error field is specified by
+   fields associated with <parameter>result</parameter> instance. The error field is specified by
    the <parameter>field_code</parameter>.
   </para>
   <para>
@@ -50,8 +49,8 @@
          <constant>PGSQL_DIAG_SQLSTATE</constant>, <constant>PGSQL_DIAG_MESSAGE_PRIMARY</constant>,
          <constant>PGSQL_DIAG_MESSAGE_DETAIL</constant>,
          <constant>PGSQL_DIAG_MESSAGE_HINT</constant>, <constant>PGSQL_DIAG_STATEMENT_POSITION</constant>,
-         <constant>PGSQL_DIAG_INTERNAL_POSITION</constant> (PostgreSQL 8.0+ only),
-         <constant>PGSQL_DIAG_INTERNAL_QUERY</constant> (PostgreSQL 8.0+ only),
+         <constant>PGSQL_DIAG_INTERNAL_POSITION</constant>,
+         <constant>PGSQL_DIAG_INTERNAL_QUERY</constant>,
          <constant>PGSQL_DIAG_CONTEXT</constant>, <constant>PGSQL_DIAG_SOURCE_FILE</constant>,
          <constant>PGSQL_DIAG_SOURCE_LINE</constant> or
          <constant>PGSQL_DIAG_SOURCE_FUNCTION</constant>.
diff --git a/reference/pgsql/functions/pg-unescape-bytea.xml b/reference/pgsql/functions/pg-unescape-bytea.xml
index 2af711ea7da4..f322de791347 100644
--- a/reference/pgsql/functions/pg-unescape-bytea.xml
+++ b/reference/pgsql/functions/pg-unescape-bytea.xml
@@ -25,15 +25,6 @@
     prefixed with '\' (e.g. \032). Users are supposed to convert back to
     binary format manually.
    </para>
-   <para>
-    This function requires PostgreSQL 7.2 or later. With PostgreSQL
-    7.2.0 and 7.2.1, bytea values must be cast when you enable
-    multi-byte support. i.e. <literal>INSERT INTO test_table (image)
-    VALUES ('$image_escaped'::bytea);</literal> PostgreSQL 7.2.2 or
-    later does not need a cast. The exception is when the client and backend
-    character encoding does not match, and there may be multi-byte
-    stream error. User must then cast to bytea to avoid this error.
-   </para>
   </note>
  </refsect1>
 
diff --git a/reference/pgsql/functions/pg-version.xml b/reference/pgsql/functions/pg-version.xml
index b3a3b2a28238..b73dc2363e21 100644
--- a/reference/pgsql/functions/pg-version.xml
+++ b/reference/pgsql/functions/pg-version.xml
@@ -16,8 +16,7 @@
   </methodsynopsis>
   <para>
    <function>pg_version</function> returns an array with the client, protocol
-   and server version. Protocol and server versions are only available if PHP
-   was compiled with PostgreSQL 7.4 or later.
+   and server version.
   </para>
   <para>
    For more detailed server information, use <function>pg_parameter_status</function>.
diff --git a/reference/pgsql/reference.xml b/reference/pgsql/reference.xml
index 04feac01767e..e473dd5b438e 100644
--- a/reference/pgsql/reference.xml
+++ b/reference/pgsql/reference.xml
@@ -34,8 +34,7 @@
     <para>
      PostgreSQL does not have special commands for fetching database schema
      information (eg. all the tables in the current database).  Instead, there
-     is a standard schema named <literal>information_schema</literal> in
-     PostgreSQL 7.4 and above containing
+     is a standard schema named <literal>information_schema</literal> containing
      system views with all the necessary information, in an easily
      queryable form.  See the <link xlink:href="&url.pgsql.manual;">PostgreSQL Documentation</link>
      for full details.  
diff --git a/reference/pgsql/setup.xml b/reference/pgsql/setup.xml
index 38a4c2ba8bbe..3c22ec2c31c2 100644
--- a/reference/pgsql/setup.xml
+++ b/reference/pgsql/setup.xml
@@ -8,9 +8,11 @@
  <section xml:id="pgsql.requirements">
   &reftitle.required;
   <para>
-   To use PostgreSQL support, you need PostgreSQL 6.5 or
-   later, PostgreSQL 8.0 or later to enable all PostgreSQL module
-   features. PostgreSQL supports many character encodings including
+   To use PostgreSQL support, you need libpq (the PostgreSQL C client
+   library).
+   As of PHP 8.0.0, libpq 9.1 or later is required.
+   As of PHP 8.4.0, libpq 10.0 or later is required.
+   PostgreSQL supports many character encodings including
    multibyte character encoding. The current version and more
    information about PostgreSQL is available at 
    <link xlink:href="&url.pgsql;">&url.pgsql;</link> and