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run code in 150+ php & hhvm versions
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<?php echo strtotime('last Monday', strtotime('+ 28 day')); echo strtotime('next Monday', strtotime('+ 28 day')); echo strtotime('last Monday'); echo strtotime('last Monday', strtotime('last Monday')); ?>
Output for 4.4.0 - 4.4.9, 5.0.5, 5.1.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1356908400135751320013544892001353884400
Output for 5.1.0 - 5.1.1
13544892001353884400
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
1356908400135811800013544892001353884400