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run code in 200+ php & hhvm versions
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<?php $array = array('acct'=>array('acct_row'=>array('password'=>'password1'))); var_dump(is_array($array[acct][acct_row][password]));
based on 6L6qL
Output for 7.2.0
Warning: Use of undefined constant acct - assumed 'acct' (this will throw an Error in a future version of PHP) in /in/nYsC4 on line 5 Warning: Use of undefined constant acct_row - assumed 'acct_row' (this will throw an Error in a future version of PHP) in /in/nYsC4 on line 5 Warning: Use of undefined constant password - assumed 'password' (this will throw an Error in a future version of PHP) in /in/nYsC4 on line 5 bool(false)
Output for 5.3.20 - 7.1.10
Notice: Use of undefined constant acct - assumed 'acct' in /in/nYsC4 on line 5 Notice: Use of undefined constant acct_row - assumed 'acct_row' in /in/nYsC4 on line 5 Notice: Use of undefined constant password - assumed 'password' in /in/nYsC4 on line 5 bool(false)