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run code in 300+ PHP versions simultaneously
]<?php $arr = array(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8); echo array_reduce($arr, function($x, $v) { return ($x ^= $v); })
Output for 5.4.0 - 5.4.28, 5.5.0 - 5.5.12
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/BZ2jO on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected $end, expecting ',' or ';' in /in/BZ2jO on line 4
Process exited with code 255.

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