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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 git.master, git.master_jit, rfc.property-hooks
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 ( )

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