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@ 2019-12-28T10:51:35Z

<?php

$first = [
    "Catalog No.:",
    "H-B No.",
];
$second = [
    [
        "GG",
        "692"
    ],
    [
        "VV",
        "693"
    ]
];

$result = array_map(function($arr) use ($first){
    foreach($first as $key => $value) {
        $arr[$key] = $value . ' ' . $arr[$key];
    }
    return $arr;
}, $second);

print_r($result);

Output
Performance
VLD
References
Branches

array_map: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

68.42 ms | 402 KiB | 5 Q