Description:
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the newest snap of php 5.1.X does not parse strtotime properly for adding days.  This used to work in 5.0.4. Look at the reproduceable code below.  The new version only seems to work with a space between the number and the days or months or years.

Reproduce code:
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$date = strtotime('20 Aug');
echo date('m/d/Y H:m:s', strtotime('+5days',$date));
echo '<br>';
echo date('m/d/Y H:m:s', strtotime('+1month',$date));
echo '<br>';
echo date('m/d/Y H:m:s', strtotime('+1year',$date));

Expected result:
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08/25/2005 00:08:00
09/20/2005 00:09:00
08/20/2006 00:08:00 

Actual result:
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01/01/1970 00:01:00
01/01/1970 00:01:00
01/01/1970 00:01:00