(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
pg_last_notice — Returns the last notice message from PostgreSQL server
   pg_last_notice() returns the last notice
   message from the PostgreSQL server on the specified
   connection. The PostgreSQL server sends notice
   messages in several cases, for instance when creating a SERIAL
   column in a table.
  
With pg_last_notice(), you can avoid issuing useless queries by checking whether or not the notice is related to your transaction.
   Notice message tracking can be set to optional by setting 1 for
   pgsql.ignore_notice in php.ini.
  
   Notice message logging can be set to optional by setting 0 for
   pgsql.log_notice in php.ini.
   Unless pgsql.ignore_notice is set
   to 0, notice message cannot be logged.
  
connectionAn PgSql\Connection instance.
mode
       One of PGSQL_NOTICE_LAST (to return last notice),
       PGSQL_NOTICE_ALL (to return all notices),
       or PGSQL_NOTICE_CLEAR (to clear notices).
      
   A string containing the last notice on the 
   given connection with
   PGSQL_NOTICE_LAST,
   an array with PGSQL_NOTICE_ALL,
   a bool with PGSQL_NOTICE_CLEAR.
  
| Version | Description | 
|---|---|
| 8.1.0 | The connectionparameter expects an PgSql\Connection
  instance now; previously, a resource was expected. | 
| 7.1.0 | The modeparameter was added. | 
Example #1 pg_last_notice() example
<?php
  $pgsql_conn = pg_connect("dbname=mark host=localhost");
  
  $res = pg_query("CREATE TABLE test (id SERIAL)");
  
  $notice = pg_last_notice($pgsql_conn);
  
  echo $notice;
?>
The above example will output:
CREATE TABLE will create implicit sequence "test_id_seq" for "serial" column "test.id"
