PHP - How do I access specific array values in nested array?

Question

I have an array like this:

    Array (
    [0] => Array ( 
        [0] => 510 
        [1] => 984 
        [2] => 1045 
        [3] => 2068 
        [4] => 1054 
        [5] => 673 
        ) 
    [1] => Array ( 
        [0] => 1163 
        [1] => 1982 
        [2] => 2067 
        [3] => 3989 
        [4] => 1940 
        [5] => 1242 
        ) 
    [2] => Array ( 
        [0] => june 
        [1] => july 
        [2] => august 
        [3] => september 
        [4] => october 
        [5] => november 
        ) 
    )

I want to access only one of the arrays within the array at a time and echo them out.

For example, I would get: 510, 984, 1045, 2068, 1054, and 673 as one result.

I've looked at multiple threads and answers but nothing that quite solves my issue, I've been able to print out all the values but I just want some specifically.

I'd store it in the variable: $array_item

My most recent attempt was:

foreach ($array_item as $inner) {
if (is_array($inner)) {
    foreach ($inner[0] as $value) {
        echo "$value \n";
    }
}
}

Which gives me: Warning: Invalid argument supplied for foreach().

I thought for sure that would work, what am I doing wrong?

If I want 510, it's $array_item[0][0]. If I want 984, it's $array_item[0][1]. If I want 1163, it's $array_item[1][0]. If I want september, it's $array_item[2][3], etc. — mopsyd
– mopsyd, Commented Nov 18, 2017 at 0:44

Barmar · Accepted Answer · 2017-11-18 00:26:34Z

3

In your code $inner[0] is one of the inner array elements, like 510. You can't loop over that.

If you just want to loop over $array_item[0], don't loop over the whole array.

if (is_array($array_item[0])) {
    foreach ($array_item[0] as $value) {
        echo "$value\n";
    }
}

edited Nov 18, 2017 at 0:26

answered Nov 18, 2017 at 0:24

Barmar

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4 Comments

Chris Stage Over a year ago

The problem with that is that I don't have the values I want returned to me, I only want what is specifically under [0] and not the entire thing.

Barmar Over a year ago

Then why did you do foreach ($array_item as $inner)? I've updated the answer.

Chris Stage Over a year ago

I got stuck on the idea because of how I assembled the array I think... since I was storying arrays inside the array... like: $array_item = array( $another_array) and so on... Thanks for clearing it up, seems so stupid simple now.

Johnish Over a year ago

You don't have to do this foreach either, just use implode as shown below. echo implode(PHP_EOL, $array_item[0]); would work

PatrickSJ · Accepted Answer · 2017-11-18 00:25:26Z

0

Does is_array($array_item) return true?

if (is_array($array_item)) {
    foreach ($array_item) {
        if (is_array($inner)) {
            foreach ($inner as $value) {
                echo "$value \n";
            }
        }    
    }
}

Edit: Also, $inner[0] is not an array. $inner is the array.

edited Nov 18, 2017 at 0:25

answered Nov 18, 2017 at 0:20

PatrickSJ

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2 Comments

Chris Stage Over a year ago

is_array($array_item) is returning true, yes.

PatrickSJ Over a year ago

Ah, do not use $inner[0]. Inner[0] is a value, not an array. Use foreach($inner as $value) instead.

Johnish · Accepted Answer · 2017-11-18 00:46:47Z

0

I would use implode, http://php.net/manual/en/function.implode.php

foreach($array_items as $items) {
    echo implode(', ', $items);
}

I see that a comment was made that he wants only the first array to be outputted and not all of them.

if (is_array($array_item[0])) {
    echo implode(PHP_EOL, $array_item[0]);
}

edited Nov 18, 2017 at 0:46

answered Nov 18, 2017 at 0:23

Johnish

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Comments

iKev61 · Accepted Answer · 2017-11-18 01:11:00Z

0

You never can tell what could solve a problem

$array_group = array();

if (isset($array_item[0]) and is_array($array_item[0])) {
foreach ($array_item[0] as $value) {
    $array_group[] = $value;
}

$array_group should output

Array
(
    [0] => 510
    [1] => 984
    [2] => 1045
    [3] => 2068
    [4] => 1054
    [5] => 673
)

answered Nov 18, 2017 at 1:11

iKev61

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