Online PHP editor | output for G3gi0

@ 2022-10-14T06:19:55Z

<?php

$array = [
    ['model' => 'iPhone 12', 'grade' => 'A', 'price' => '100'],
    ['model' => 'iPhone 12', 'grade' => 'A', 'price' => '95'],
    ['model' => 'iPhone 12', 'grade' => 'B', 'price' => '85'],
    ['model' => 'iPhone 12', 'grade' => 'C', 'price' => '75'],
];

$result = [];
foreach ($array as $row) {
    $compositeKey = $row['model'] . '_' . $row['grade'];
    if (!isset($result[$compositeKey]) || $result[$compositeKey][$row['grade']] > $row['price']) {
        $result[$compositeKey] = [
            'model' => $row['model'],
            $row['grade'] => $row['price']
        ];
    }
}
var_export(array_values($result));

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 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 ( 'model' => 'iPhone 12', 'A' => '95', ), 1 => array ( 'model' => 'iPhone 12', 'B' => '85', ), 2 => array ( 'model' => 'iPhone 12', 'C' => '75', ), )
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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