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run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array('a' => 2, 'b' => 1, 'c' => 4); $temp = $array['c']; $array['c'] = $array['a']; $array['a'] = temp; print_r($array);
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant temp - assumed 'temp' (this will throw an Error in a future version of PHP) in /in/YRjvg on line 6 Array ( [a] => temp [b] => 1 [c] => 2 )
Output for 4.3.0 - 7.1.20
Notice: Use of undefined constant temp - assumed 'temp' in /in/YRjvg on line 6 Array ( [a] => temp [b] => 1 [c] => 2 )