Add a link to the PHP bug #55154.
Simplify code.
[auto] Merge from Database

    • #5f8d89e — Add a link to the PHP bug #55154. (Ivan Enderlin, 2013-08-29)
    • #4802efc — Simplify code. (Ivan Enderlin, 2013-08-29)

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Merge remote branch 'library-database/master'