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<?php $a1 = [ ['127.0.0.1',11211], ['127.0.0.2',11211], ['127.0.0.4',11211], ]; $a2 = [ ['127.0.0.1',11211], ['127.0.0.2',11211], ['127.0.0.3',11211], ['127.0.0.4',11211], ]; print_r( array_udiff( $a1, $a2, function($a,$b){ return $a[0] === $b[0]; } ) );
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/kJLbf on line 17 Array ( )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/kJLbf on line 22 Array ( )
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Array ( )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/kJLbf on line 3
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
Parse error: parse error, unexpected '[' in /in/kJLbf on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kJLbf on line 3
Process exited with code 255.

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