循环4数组元素。 然后休息。 然后循环4个下一个数组元素，依此类推，直到数组结束

Question

My array contains a dynamic amount of element. they are grouped in 4. so

array
 [0] -> "group one"
 [1] -> "group one"
 [2] -> "group one"
 [3] -> "group one"

 [4] -> "group two"
 [5] -> "group two"
 [6] -> "group two"
 [7] -> "group two"

 [8] -> "group three"
 [9] -> "group three"
 [10] -> "group three"
 [11] -> "group three"

What I want to do is output and test all the elements i each group in one loop, add then do the same with the next group.

I suspect it should be easy.. using a counter to keep track of how many outputs etc, but apparently my brain wont work properly on this problem :)

Thanks to anyone who bothers helping me :)

Answer 1

Take a look at array_chunk.

<?php
foreach(array_chunk(range(1, 12), 4) as $index => $chunk) {
    echo "Printing Chunk $index
";
    foreach($chunk as $number) {
        echo "$number
";
    }
}

/*
    Printing Chunk 0
    1
    2
    3
    4
    Printing Chunk 1
    5
    6
    7
    8
    Printing Chunk 2
    9
    10
    11
    12
*/

Anthony.