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<?php [ 1 => function ($a) { echo $a; } ][1]('foo'); [ 1 => function ($a) { echo $a; } ][1]; function n($o) { return $o; } n([ 1 => function ($a) { echo $a; } ])[1]; function n($o) { return $o; } n([ 1 => function ($a) { echo $a; } ])[1]('foo');
Output for 5.3.0 - 5.3.25, 5.4.0 - 5.4.15
Parse error: syntax error, unexpected '[' in /in/c6MOC on line 3
Process exited with code 255.

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