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run code in 150+ php & hhvm versions
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<?php $s = 'a b'; print_r(explode(" ", $s)); $s = 'c d'; print_r(explode(" ", $s));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => a [1] => b ) Array ( [0] => c [1] => [2] => d )