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<?php $array1 = [ [10, 'Some Name..'], [11, 'Some Name..'], [13, 'Some Name..'], ]; $array2 = [ [13, 'Viewed'] ]; var_export( array_reduce( array_merge($array1, $array2), function($result, $row) { if (!isset($result[$row[0]])) { $result[$row[0]] = $row; } else { $result[$row[0]][] = $row[1]; } return $result; } ) );
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
array ( 10 => array ( 0 => 10, 1 => 'Some Name..', ), 11 => array ( 0 => 11, 1 => 'Some Name..', ), 13 => array ( 0 => 13, 1 => 'Some Name..', 2 => 'Viewed', ), )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 10 => array ( 0 => 10, 1 => 'Some Name..', ), 11 => array ( 0 => 11, 1 => 'Some Name..', ), 13 => array ( 0 => 13, 1 => 'Some Name..', 2 => 'Viewed', ), )
Output for 5.3.3
Parse error: syntax error, unexpected '[' in /in/aBTJU on line 3
Process exited with code 255.

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