array push in multidimensional array when both object key same in PHP

Question

I have twomultidimensional array in below format

$skillInfo = Array
(
    "Mechanical" => Array
        (
            "0" => 100
            "1" => 400
        )

    "Understanding" => Array
        (
            "0" => 200
        )

    "Application/Appreciation" => Array
        (
            "0" => 300
        )

);

$skillMaster = [
["skillID" => 1, "skillName" => "Mechanical"],
["skillID" => 2, "skillName" => "Understanding"],
["skillID" => 3, "skillName" => "Application/Appreciation"]
];

$skillMaster skillName is the same as $skillInfo keys, so we can replace $skillInfo keys from $skillMaster skillID.

Expected output

Array
(
    [1] => Array
        (
            [0] => 100
            [1] => 400
        )

    [2] => Array
        (
            [0] => 200
        )

    [3] => Array
        (
            [0] => 300
        )

    )

my code

foreach($skillInfo as $key1 => $val1){
    $skillInfo[$key1][$skillMaster[$val1["skillID"]]] = $skillMaster[$val1["skillID"]] ?? [];
}

above code is not working as expected output, kindly anyone help me out.

$val1 is a $skillInfo element, it doesn't have skillID. — Barmar
– Barmar, Commented Dec 10, 2020 at 6:07
skill name present $skillInfo array, i want to replace instead of name skillID — sathasivam r
– sathasivam r, Commented Dec 10, 2020 at 6:09
I know that's what you want to do. Why did you think $val1['skillID'] would work? — Barmar
– Barmar, Commented Dec 10, 2020 at 6:11

cherful · Accepted Answer · 2020-12-10 06:10:08Z

2

foreach($skillMaster as $item){
  if(array_key_exists($item['skillName'], $skillInfo)){
        $skillInfo[$item['skillID']] = $skillInfo[$item['skillName']];
        unset($skillInfo[$item['skillName']]);
   }
}

answered Dec 10, 2020 at 6:10

cherful

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1 Comment

El_Vanja Over a year ago

Including an explanation of the changes you made would be helpful for both the OP and any future readers.

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