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<?php $array = [ ['group' => 'Apple', 'num' => 5, 'price' => 10], ['group' => 'Apple', 'num' => 2, 'price' => 8], ['group' => 'Orange', 'num' => 4, 'price' => 6], ['group' => 'Orange', 'num' => 12, 'price' => 24], ]; $result = []; foreach ($array as ['group' => $g, 'num' => $n, 'price' => $p]) { $result[$g]['group'] = $g; $result[$g]['num'] = ($result[$g]['num'] ?? 0) + $n; $result[$g]['price'] = ($result[$g]['price'] ?? 0) + $p; } var_export(array_values($result));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
array ( 0 => array ( 'group' => 'Apple', 'num' => 7, 'price' => 18, ), 1 => array ( 'group' => 'Orange', 'num' => 16, 'price' => 30, ), )
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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