将 CSV 字符串转换为关联数组

Question

I'm trying to create an associative array based on my csv output.

I've got some code in another part of my system that creates a csv and what I'm trying to do is call that code in a different part of my system but I don't want it to save to a csv file. For the time being what that code does is it just prints out a csv string.

So if I print_r($csv) then I would get this

id,product,price,status\n
1,"Product 1",123,new\n
2,"Product 2",456,cancelled\n
3,"Product 3",543,new\n
4,"Product 4",987,new\n
5,"Product 5",567,draft\n

the above csv doesn't get saved to a csv file.

What I would like is to be able to convert that into an array.

So far I've done this

// This prints out the csv string that you see above
$csv = $csvClass->getCsv();

$lines = explode(PHP_EOL, $csv);
$array = [];

foreach($lines as $line)
{
    $csvArray[] = str_getcsv($line);
}

dd($csvArray);

That then gives me this

array:6 [
  0 => array:4 [
    0 => "id"
    1 => "product"
    2 => "price"
    3 => "status"
  ]
  1 => array:4 [
    0 => "1"
    1 => "Product 1"
    2 => "123"
    3 => "new"
  ]
  2 => array:4 [
    0 => "2"
    1 => "Product 2"
    2 => "456"
    3 => "cancelled"
  ]
  3 => array:4 [
    0 => "3"
    1 => "Product 3"
    2 => "543"
    3 => "new"
  ]
  4 => array:4 [
    0 => "4"
    1 => "Product 4"
    2 => "987"
    3 => "new"
  ]
  5 => array:4 [
    0 => "5"
    1 => "Product 5"
    2 => "567"
    3 => "draft"
  ]
]

but I would like it to look like this

array:4 [
  id => array:5 [
    0 => "1"
    1 => "2"
    2 => "3"
    3 => "4"
    4 => "5"
  ]
  product => array:5 [
    0 => "Product 1"
    1 => "Product 2"
    2 => "Product 3"
    3 => "Product 4"
    4 => "Product 5"
  ]
  price => array:5 [
    0 => "123"
    1 => "456"
    2 => "543"
    3 => "987"
    4 => "567"
  ]
  status => array:5 [
    0 => "new"
    1 => "cancelled"
    2 => "new"
    3 => "new"
    4 => "draft"
  ]
]

where the first row of the csv is the keys.

I hope that made sense.

Answer 1

$lines = explode(PHP_EOL, $csv);
$array = [];

foreach($lines as $line)
{
    $csvArray[] = str_getcsv($line);
}

// Here we extract first subarray, which contains "headers"
$keys = array_shift($csvArray);

// combine values from two arrays
$result = array_combine(
    $keys,
    // use trick with null as callback 
    array_map(null, ...$csvArray)
);
dd($result);