Show All Data list of multidimensional array Using Foreach Loop

Question

Here is The My Array Code...

$data = array(
            'data_1',
            'data_2',
            'data_3',
            'data_4',
            'data_5' => array(
                            'data_5_1',
                            'data_5_2'
                        )
);

i Want to Ountput Like The : -

data_1
data_2
data_3
data_4
data_5
    data_5_1
    data_5_2

Here is My Code I try to Self But I Show Error

foreach($data as $da){ 
     echo $da."<br>";
}

Error Found Like This

data_1
data_2
data_3
data_4
Notice: Array to string conversion in filename.php on line 3
Array

Please Fix this problem & Use echo not print_r

Possible duplicate of [Reference - What does this error mean in PHP?](https://stackoverflow.com/questions/12769982/reference-what-does-this-error-mean-in-php) — Pinke Helga, Mar 06 '19 at 07:09

score 2 · Accepted Answer · answered Mar 06 '19 at 07:08

2

This is best achieved with a recursive function so that you can deal with any level of nested arrays:

function display_list($array) {
    foreach ($array as $k => $v) {
        if (is_array($v)) {
            echo "$k\n";
            display_list($v);
        }
        else {
            echo "$v\n";
        }
    }
}
display_list($data);

Output:

data_1
data_2
data_3 
data_4 
data_5 
data_5_1 
data_5_2

Demo on 3v4l.org

answered Mar 06 '19 at 07:08

Nick

138,499
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if I want Drop Down of The list Like i Select data_5 then show data_5_1 data_5_2 – sanjay joon Mar 06 '19 at 07:16
@sanjayjoon I suggest you take a look at https://stackoverflow.com/questions/11747156/php-create-navigation-menu-from-multidimensional-array-dynamically or https://stackoverflow.com/questions/43976836/dynamically-create-php-navigation-menu-from-multidimensional-array – Nick Mar 06 '19 at 07:45

Pinke Helga · Answer 2 · 2019-03-06T07:21:36.513

1

You could use iterators:

foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($data)) as $item)
  echo "$item<br>", PHP_EOL;

As asked in comments, if you want either the key or value depending on type, you can use the flag SELF_FIRST and the ternary operator:

foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($data), RecursiveIteratorIterator::SELF_FIRST) as $key => $item)
  echo (is_scalar($item) ? $item : $key) . '<br>', PHP_EOL;

edited Mar 06 '19 at 07:21

answered Mar 06 '19 at 07:13

Pinke Helga

6,378
2
22
42

This is pretty cool, but it doesn't print out the `data_5` *key* value... – Nick Mar 06 '19 at 07:16
@Nick I've added a version also showing keys when the item is an array. – Pinke Helga Mar 06 '19 at 07:22
Looks good now, although it lost some of the nice cleanness that the first version had. pity... – Nick Mar 06 '19 at 07:41

score 0 · Answer 3 · edited Mar 06 '19 at 08:28

0

foreach ($data as $val) {
    if(is_array($val)){
        foreach ($val as $row) {
            echo "<br>&nbsp;&nbsp;&nbsp;&nbsp;".$row;
        }
    }
    else{ 
         echo "<br>".$val;
    }
}

edited Mar 06 '19 at 08:28

sanjay joon

133
1
14

answered Mar 06 '19 at 07:24

devil

24
4

data_5 Not Found in Output – sanjay joon Mar 06 '19 at 14:38

Show All Data list of multidimensional array Using Foreach Loop

3 Answers3