Description:
------------
If a PostgreSQL user's password contains a leading single quote (apostrophe) PDO-pgsql is unable to connect to the database as the user. The script fails with the message:

PHP Fatal error:  Uncaught exception 'PDOException' with message 'SQLSTATE[08006] [7] unterminated quoted string in connection info string'

Test script:
---------------
#!/bin/bash

echo "Trailing quote"
psql postgres -c "DROP DATABASE IF EXISTS testphp"
psql postgres -c "DROP ROLE IF EXISTS testphp"
psql postgres -c "CREATE ROLE testphp PASSWORD 'asdf''' LOGIN"
psql postgres -c "CREATE DATABASE testphp OWNER testphp"
php -r "new PDO(\"pgsql:dbname=testphp\", \"testphp\", \"asdf'\");"

echo "Leading quote"
psql postgres -c "DROP DATABASE IF EXISTS testphp"
psql postgres -c "DROP ROLE IF EXISTS testphp"
psql postgres -c "CREATE ROLE testphp PASSWORD '''asdf' LOGIN"
psql postgres -c "CREATE DATABASE testphp OWNER testphp"
php -r "new PDO(\"pgsql:dbname=testphp\", \"testphp\", \"'asdf\");"


Expected result:
----------------
PHP can connect to the database no problem.

Output from script:

$ bash test.sh
Trailing quote
DROP DATABASE
DROP ROLE
CREATE ROLE
CREATE DATABASE
Leading quote
DROP DATABASE
DROP ROLE
CREATE ROLE
CREATE DATABASE


Actual result:
--------------
$ bash test.sh
Trailing quote
DROP DATABASE
DROP ROLE
CREATE ROLE
CREATE DATABASE
Leading quote
DROP DATABASE
DROP ROLE
CREATE ROLE
CREATE DATABASE
PHP Fatal error:  Uncaught exception 'PDOException' with message 'SQLSTATE[08006] [7] unterminated quoted string in connection info string' in Command line code:1
Stack trace:
#0 Command line code(1): PDO->__construct('pgsql:dbname=te...', 'testphp', ''asdf')
#1 {main}
  thrown in Command line code on line 1