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run code in 150+ php & hhvm versions
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<?php $n = "afcdebhijklmnopqrstuvxyz"; var_dump( $n[true]."xa")[""+1].$n[true*10-1] );
Output for 5.4.0 - 5.4.28
Parse error: syntax error, unexpected ')' in /in/5delh on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/5delh on line 5
Process exited with code 255.