php array operations append element

Question

i have a small issue im creating multi table and im stuck, i want to create something like this:

1 table: [4,5,6]
2 table: [7,2,7,8]
3 table: [1,1,1]
4 table: [6,0,9]

but each table can be of different size,
expected result:

[[4,7,1,6], [5,2,1,0], [6,7,1,9], [8]]

i was trying to make it using for loop but no success so far?

array should be builded this way:
first element is collection of all t1[0] + t2[0] + t3[0] ...
second element is collection of all t1[1] + t2[1] + t3[1] ...
... and so on

@PankajKhairnar: Yes it does. Everyone else: Chatspeak ("u", "ur" etc.) is not welcome on SO. — ThiefMaster
– ThiefMaster, Commented Dec 27, 2012 at 12:46
@Pankaj - I suggest you reread the PHP documentation about arrays — Mark Baker
– Mark Baker, Commented Dec 27, 2012 at 12:46
@MarkBaker : I wasn't know php's version 5.4 and above is supporting square brackets for array. — Pankaj Khairnar
– Pankaj Khairnar, Commented Dec 27, 2012 at 13:41

Mark Baker · Accepted Answer · 2012-12-27 12:46:12Z

4

$result = array();
foreach ([[4,5,6], [7,2,7,8], [1,1,1], [6,0,9]] as $key => $value) {
    foreach($value as $key2 => $value2) {
        $result[$key2][$key] = $value2;
    }
}

var_dump($result);

answered Dec 27, 2012 at 12:46

Mark Baker

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2 Comments

user1726343 Over a year ago

This does have the side effect of turning the last array into an associative array with key "1" (index 0 is empty), which is not exactly the result the OP was looking for.

Mark Baker Over a year ago

@Asad - that can easily be fixed by doing $result = array_map('array_values', $result); but it depends how critical the keys are as to whether this is actually needed

score 0 · Accepted Answer · 2012-12-27 12:57:04Z

0

$result = array();
foreach (array(array(4,5,6), array(7,2,7,8), array(1,1,1), array(6,0,9)) as $k1 => $v1) {
    foreach($v1 as $k2 => $v2){
        if(!isset($result[$k2])){
            $result[$k2] = array();
        }
        $result[$k2][] = $v2;
    }
}

//output: [[4,7,1,6],[5,2,1,0],[6,7,1,9],[8]]

Here is a demonstration: http://codepad.org/lxJt4zOp

edited Dec 27, 2012 at 12:57

answered Dec 27, 2012 at 12:47

user1726343

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