Description:
------------
There seems to be a confusion in handling stdin between PostgreSQL and PHP.

Reproduce code:
---------------
<?php
$conn = pg_connect("user=knt dbname=template1")
        or die("Connection failed!\n");

print "Starting query...\n";
$res = pg_query("COPY example_table FROM stdin");

/*
 * If I'd not use a pg_end_copy() call just after "COPY FROM
 * stdin" query, script flow will never pass through this
 * line and stuck here with a 100% CPU usage.
 */

if ( pg_result_status($res) != PGSQL_COPY_IN )
    die("Unexpected result status!\n");

print "At last!\n";
pg_close();
?>

/*
 * The same of this script
 * [http://yazicivo.fateback.com/example-copy.txt] written
 * in C (with same libpq calls) works fine.
 */

Expected result:
----------------
shell$ php example-copy.php
Starting query...
At last!
shell$ _

Actual result:
--------------
shell$ php example-copy.php
Starting query...

# It enters to an endless loop with a 100% CPU usage.