Update for compatibility with PHP 5.3.0 (see http://github.com/symphony/symphony-2/issues/#issue/74).
Update for compatibility with PHP 5.3.0 (see http://github.com/symphony/symphony-2/issues/#issue/74).

Signed-off-by: Alistair Kearney <e9adbcf81c8a36ccc628e09bc92d0e25e1c8e501@21degrees.com.au>
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