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<?php $one = [1]; $two = [42]; $arr_1 = ['k' => &$one]; $arr_2 = ['k' => &$two]; var_dump(current($arr1['k']), current($arr2['k'])); array_replace_recursive($arr1, $arr2); var_dump(current($arr1['k']), current($arr2['k']));
Output for 8.3.0 - 8.3.4
Warning: Undefined variable $arr1 in /in/FYj3Y on line 8 Warning: Trying to access array offset on null in /in/FYj3Y on line 8 Fatal error: Uncaught TypeError: current(): Argument #1 ($array) must be of type array, null given in /in/FYj3Y:8 Stack trace: #0 /in/FYj3Y(8): current(NULL) #1 {main} thrown in /in/FYj3Y on line 8
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17
Warning: Undefined variable $arr1 in /in/FYj3Y on line 8 Warning: Trying to access array offset on value of type null in /in/FYj3Y on line 8 Fatal error: Uncaught TypeError: current(): Argument #1 ($array) must be of type array, null given in /in/FYj3Y:8 Stack trace: #0 /in/FYj3Y(8): current(NULL) #1 {main} thrown in /in/FYj3Y on line 8
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Notice: Undefined variable: arr1 in /in/FYj3Y on line 8 Notice: Trying to access array offset on value of type null in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 Notice: Undefined variable: arr2 in /in/FYj3Y on line 8 Notice: Trying to access array offset on value of type null in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 NULL NULL Notice: Undefined variable: arr1 in /in/FYj3Y on line 9 Notice: Undefined variable: arr2 in /in/FYj3Y on line 9 Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /in/FYj3Y on line 9 Notice: Undefined variable: arr1 in /in/FYj3Y on line 10 Notice: Trying to access array offset on value of type null in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 Notice: Undefined variable: arr2 in /in/FYj3Y on line 10 Notice: Trying to access array offset on value of type null in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 NULL NULL
Output for 7.3.32 - 7.3.33
Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 NULL NULL Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /in/FYj3Y on line 9 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 NULL NULL
Output for 7.3.16 - 7.3.31
Notice: Undefined variable: arr1 in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 Notice: Undefined variable: arr2 in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 NULL NULL Notice: Undefined variable: arr1 in /in/FYj3Y on line 9 Notice: Undefined variable: arr2 in /in/FYj3Y on line 9 Warning: array_replace_recursive(): Expected parameter 1 to be an array, null given in /in/FYj3Y on line 9 Notice: Undefined variable: arr1 in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 Notice: Undefined variable: arr2 in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 NULL NULL
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
Notice: Undefined variable: arr1 in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 Notice: Undefined variable: arr2 in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 NULL NULL Notice: Undefined variable: arr1 in /in/FYj3Y on line 9 Notice: Undefined variable: arr2 in /in/FYj3Y on line 9 Warning: array_replace_recursive(): Argument #1 is not an array in /in/FYj3Y on line 9 Notice: Undefined variable: arr1 in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 Notice: Undefined variable: arr2 in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 NULL NULL
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 8 NULL NULL Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 Warning: current() expects parameter 1 to be array, null given in /in/FYj3Y on line 10 NULL NULL

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