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<?php $items = array(new \stdClass(), new \stdClass()); $copy = array(); foreach ($items as $item) { $copy[] = $item; } $diff = array_udiff($items, $$copy, function ($a, $b) { //var_dump($a, $b, $a === $b); return $a === $b; }); var_dump($diff);
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Array to string conversion in /in/5270X on line 11 Warning: Undefined variable $Array in /in/5270X on line 11 Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/5270X on line 11 Fatal error: Uncaught TypeError: array_udiff(): Argument #2 must be of type array, null given in /in/5270X:11 Stack trace: #0 /in/5270X(11): array_udiff(Array, NULL, Object(Closure)) #1 {main} thrown in /in/5270X on line 11
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
Warning: Array to string conversion in /in/5270X on line 11 Warning: Undefined variable $Array in /in/5270X on line 11 Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/5270X on line 14 Fatal error: Uncaught TypeError: array_udiff(): Argument #2 must be of type array, null given in /in/5270X:14 Stack trace: #0 /in/5270X(14): array_udiff(Array, NULL, Object(Closure)) #1 {main} thrown in /in/5270X on line 14
Process exited with code 255.
Output for 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/5270X on line 11 Notice: Undefined variable: Array in /in/5270X on line 11 Warning: array_udiff(): Expected parameter 2 to be an array, null given in /in/5270X on line 14 NULL
Output for 7.3.32 - 7.3.33
Warning: array_udiff(): Expected parameter 2 to be an array, null given in /in/5270X on line 14 NULL
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
Notice: Array to string conversion in /in/5270X on line 11 Notice: Undefined variable: Array in /in/5270X on line 11 Warning: array_udiff(): Argument #2 is not an array in /in/5270X on line 14 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Parse error: syntax error, unexpected T_FUNCTION in /in/5270X on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Parse error: parse error, unexpected T_FUNCTION in /in/5270X on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/5270X on line 4 Parse error: parse error in /in/5270X on line 11
Process exited with code 255.

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