PHP how to flatten out this indexed array? [duplicate]

Question

I have the following array:

Array ( [0] => Array ( [ContractorName] => Joe Soap [BonusAmount] => 73.92 ) [1] => Array ( [ContractorName] => Mike Michaels [BonusAmount] => 68.55 ) [2] => Array ( [ContractorName] => John Smith [BonusAmount] => 34.35 ) [3] => Array ( [ContractorName] => Pete Peterson [BonusAmount] => 24.61 ) [4] => Array ( [ContractorName] => Pete Smith [BonusAmount] => 22.76 ) )

How do I go about ending up with an array that looks like this:

Array ( [Joe Soap] => 73.92 [Mike Michaels] => 68.55 [John Smith] => 34.35 [Pete Peterson] => 24.61 [Pete Smith] => 22.76 )

I'm a bit lost at the moment. I have tried creating a new array by looping over the first array, but I'm getting unwanted results. Any help greatly appreciated.

Saty · Accepted Answer · 2017-06-09 13:39:51Z

Use array_combine with array_column as

array_combine(array_column($records, 'ContractorName'),array_column($records, 'BonusAmount'));

unalignedmemoryaccess · Accepted Answer · 2017-06-09 13:53:29Z

Go through entire array using foreach and then use each piece to construct new array.

$out = []; foreach ($inputArray as $v) { $out[$v['ContractorName']] = $v['BonusAmount']; }

Second solution is by using array_combine and array_column.

$keys = array_column($inputArray, 'ContractorName'); $values = array_column($inputArray, 'BonusAmount'); $output = array_combine($keys, $values); //Or put everything in single line $output = array_combine(array_column($inputArray, 'ContractorName'), array_column($inputArray, 'BonusAmount'));

Third option

$output = array_column($inputArray, 'BonusAmount', 'ContractorName');

Perfect. Works like a charm. Will give upvote and kudos in a few minutes. Thanks.

LF-DevJourney · Accepted Answer · 2017-06-09 13:57:44Z

You can use one array_column(), and with the third parameter to specify the index. Live Demo.

array_column($array, 'BonusAmount', 'ContractorName');

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