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run code in 200+ php & hhvm versions
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<?php $arr = [ 'test', 'test2', '2384 sldjf $$' ]; echo serialize($arr); ?>
based on FtgZm
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
a:3:{i:0;s:4:"test";i:1;s:5:"test2";i:2;s:13:"2384 sldjf $$";}