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<?php $array1 = [[12 => 'new q sets'], [11 => 'common set']]; $array2 = [[11 => 'common set']]; var_export(array_diff_assoc($array1, $array2));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: Array to string conversion in /in/jIUcq on line 6 Warning: Array to string conversion in /in/jIUcq on line 6 array ( 1 => array ( 11 => 'common set', ), )
Output for 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/jIUcq on line 6 Notice: Array to string conversion in /in/jIUcq on line 6 array ( 1 => array ( 11 => 'common set', ), )

preferences:
103.29 ms | 1270 KiB | 4 Q