CODEWITHSUNDEEP
phparraysmultidimensional-arrayforeach
Moshe
Moshe

Reputation: 611

Returning Separate Lists of Items from a Multidimensional Array in PHP

I have the following array:

$items = array(
'item_1' => array('sub-item_1_A','sub-item_1_B', 'sub-item_1_C', 'sub-item_1_D', 'sub-item_1_E'),
'item_2' => array('sub-item_2_A','sub-item_2_B', 'sub-item_2_C'),
'item_3' => array('sub-item_3_A','sub-item_3_B', 'sub-item_3_C', , 'sub-item_3_D'),
'item_4' => array('sub-item_4_A','sub-item_4_B'),
'item_5' );

The first thing I want to do is return a list of just the items -- i.e., the following:

item_1, item_2, item_3, item_4, item_5

I need that list in and of itself.

I ALSO need to then use that list to create SEPARATE lists of each of the the sub-arrays. I.e., here is one list:

'sub-item_1_A','sub-item_1_B', 'sub-item_1_C', 'sub-item_1_D', 'sub-item_1_E'

And here is the next list:

'sub-item_2_A','sub-item_2_B', 'sub-item_2_C'

And so on.

Any ideas on how to do this?

Thanks.

UPDATE I do not want to return the sub-items as a string, but rather I just wish to be able to access the sub-items of each item individually.

Upvotes: 0

Views: 33

Answers (3)

Manjeet Barnala
Manjeet Barnala

Reputation: 2995

$items = array(
            'item_1' => array('sub-item_1_A','sub-item_1_B', 'sub-item_1_C', 'sub-item_1_D', 'sub-item_1_E'),
            'item_2' => array('sub-item_2_A','sub-item_2_B', 'sub-item_2_C'),
            'item_3' => array('sub-item_3_A','sub-item_3_B', 'sub-item_3_C',  'sub-item_3_D'),
            'item_4' => array('sub-item_4_A','sub-item_4_B'),
            'item_5' => '');

foreach($items as $key => $item)
{
    echo '<h3>'.$key.'</h3>';
    if(!empty($item))
    {
        foreach($item as $k => $v)
        {
            echo '<h5>'.$v.'</h5>';
        }
    }
}

This will give you 

item_1
sub-item_1_A
sub-item_1_B
sub-item_1_C
sub-item_1_D
sub-item_1_E
item_2
sub-item_2_A
sub-item_2_B
sub-item_2_C
item_3
sub-item_3_A
sub-item_3_B
sub-item_3_C
sub-item_3_D
item_4
sub-item_4_A
sub-item_4_B
item_5

Upvotes: 1

Murad Hasan
Murad Hasan

Reputation: 9583

Online Check, A working example.

To make the "return a list of just the items" you need to use just array_keys.

$list_of_first = array_keys($items);

return a list of just the items:

Array
(
    [0] => item_1
    [1] => item_2
    [2] => item_3
    [3] => item_4
    [4] => item_5
)

You can change it to a list by using implode here.

And for the rest you need a foreach loop and use the implode to get the array items as string like yo want.

foreach($items as $val){
    echo implode(", ", $val)."<br/>";
}

List of sub array's:

sub-item_1_A, sub-item_1_B, sub-item_1_C, sub-item_1_D, sub-item_1_E
sub-item_2_A, sub-item_2_B, sub-item_2_C
sub-item_3_A, sub-item_3_B, sub-item_3_C, sub-item_3_D
sub-item_4_A, sub-item_4_B
sub-item_5_A, sub-item_5_B

Upvotes: 2

Ranjit Shinde
Ranjit Shinde

Reputation: 1130

Hope this will help:

first you need to get the all array keys and implode it to get the items list. To get sub items list you need to loop through the array values.

<?php

$items = array(
'item_1' => array('sub-item_1_A','sub-item_1_B', 'sub-item_1_C', 'sub-item_1_D', 'sub-item_1_E'),
'item_2' => array('sub-item_2_A','sub-item_2_B', 'sub-item_2_C'),
'item_3' => array('sub-item_3_A','sub-item_3_B', 'sub-item_3_C', 'sub-item_3_D'),
'item_4' => array('sub-item_4_A','sub-item_4_B'),
'item_5' => "");

echo $itemsList = implode(',',array_keys($items))."\n";
$subItemsList = array_values($items);
foreach ($subItemsList as $key=>$value) {
    if (!empty($value))
        echo $subItemsList = implode(',',$value)."\n";

}

Upvotes: 1

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