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<?php $arr=array(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8); $arr = array_reduce($arr, 'xor'); echo $arr[0];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_reduce(): Argument #2 ($callback) must be a valid callback, function "xor" not found or invalid function name in /in/L1B0X:4 Stack trace: #0 /in/L1B0X(4): array_reduce(Array, 'xor') #1 {main} thrown in /in/L1B0X on line 4
Process exited with code 255.
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Warning: array_reduce() expects parameter 2 to be a valid callback, function 'xor' not found or invalid function name in /in/L1B0X on line 4 Notice: Trying to access array offset on value of type null in /in/L1B0X on line 5
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.26
Warning: array_reduce() expects parameter 2 to be a valid callback, function 'xor' not found or invalid function name in /in/L1B0X on line 4
Output for 5.2.3 - 5.2.17
Warning: array_reduce(): The second argument, 'xor', should be a valid callback in /in/L1B0X on line 4
Output for 4.4.3 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br /> <b>Warning</b>: array_reduce() [<a href='function.array-reduce'>function.array-reduce</a>]: The second argument, 'xor', should be a valid callback in <b>/in/L1B0X</b> on line <b>4</b><br />
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.2
<br /> <b>Warning</b>: array_reduce(): The second argument, 'xor', should be a valid callback in <b>/in/L1B0X</b> on line <b>4</b><br />
Output for 4.3.0 - 4.3.1
<br /> <b>Warning</b>: array_reduce() [<a href='http://www.php.net/function.array-reduce'>function.array-reduce</a>]: The second argument, 'xor', should be a valid callback in <b>/in/L1B0X</b> on line <b>4</b><br />
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215.55 ms | 402 KiB | 343 Q