(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_copy_to — Copy a table to an array
$connection,$table_name,$separator = "\t",$null_as = "\\\\N"
   pg_copy_to() copies a table to an array. It
   issues COPY TO SQL command internally to
   retrieve records.
  
connectionAn PgSql\Connection instance.
table_name
       Name of the table from which to copy the data into rows.
      
separator
       The token that separates values for each field in each element of
       rows.  Default is \t.
      
null_as
       How SQL NULL values are represented in the
       rows.  Default is \\N ("\\\\N").
      
| Version | Description | 
|---|---|
| 8.1.0 | The connectionparameter expects an PgSql\Connection
  instance now; previously, a resource was expected. | 
Example #1 pg_copy_to() example
<?php
   $db = pg_connect("dbname=publisher") or die("Could not connect");
   
   $rows = pg_copy_to($db, $table_name);
   
   pg_query($db, "DELETE FROM $table_name");
   
   pg_copy_from($db, $table_name, $rows);
?>