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Bugs & Features
<? $test = !!undefined; print_r($test);
Output for 7.2.0
Warning: Use of undefined constant undefined - assumed 'undefined' (this will throw an Error in a future version of PHP) in /in/sLrI8 on line 2 1
Output for 5.4.0 - 7.1.10
Notice: Use of undefined constant undefined - assumed 'undefined' in /in/sLrI8 on line 2 1
Output for 4.3.0 - 5.3.29
<? $test = !!undefined; print_r($test);