转换2个数组x 3 key => value成为3个数组x 2 [index]值

Question

I have this 2 arrays x 3 key=>value:

$a = array ( [PLTS] => 400 [SCMT] => 300 [PROG] => 100 ) 
$b = array ( [PLTS] => 800 [SCMT] => 400 [PROG] => 200 )

I want to convert it to 3 arrays x 2 index value like this:

$PLTS = array ( [0] => 400 [1] => 800)
$SCMT = array ( [0] => 300 [1] => 400 ) 
$PROG = array ( [0] => 100 [1] => 200 ) 

How can I do it??

Answer 1

Here is the general process. Build an array of the arrays and extract each column into a new var:

$PLTS = array_column(array($a, $b), 'PLTS');
$SCMT = array_column(array($a, $b), 'SCMT');
$PROG = array_column(array($a, $b), 'PROG');

To do all arrays in one:

foreach($a as $k => $v) {
    ${$k} = array_column(array($a, $b), $k);
}

However, I would go for a result array:

foreach($a as $k => $v) {
    $result[$k] = array_column(array($a, $b), $k);
}