Description:
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My understanding of pg_escape_string() is that it will escape only those characters that require escaping by the postgresql database.

Using standard_conforming_strings=on in postgres (8.2.4) a "\" (backslash) character is just a backslash character, not a special character requiring escaping.  Therefore, I do not think pg_escape_string('\') should return '\\' but rather '\'.

The only way I can see to enter a single backslash character is to use the E('\\') syntax but I should not have do so.


Test script:
---------------
<?php
print pg_escape_string(' \ ');
?>



Expected result:
----------------
should return ' \ '

Actual result:
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returns ' \\ '