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<?php $a = 1; $b = array(2, 3); $arr = array(&$a, &$b[0], &$b[1]); 1+$arr[0]++=& $arr; $arr[1]++; echo $a; echo implode($b); ?>
Output for 5.3.0 - 5.4.19
Parse error: syntax error, unexpected '=' in /in/IUU6W on line 5
Process exited with code 255.