PHP Array Formatting for array inner array without using RecursiveIteratorIterator

Question

How can I get this format? Result should be dynamic:

This is my original array:

$arr = array(0 => 1,
        array(
            0 => 'a',
            1 => 'b'
        ),
        'c' => '0'
    );

I've tried:

$kArr = array();
for($i=0; $i<count($arr); $i++ ){
    $iArr = array();
    echo $arr[$i];
    foreach($arr[$i] as $key => $value){
        if(!is_array($value)) continue;

        foreach($value as $subKey => $subValue){            
            $iArr[] = $subValue;
        }
    }

    if(count($iArr) > 0 )
        $kArr[$i] = $iArr;
}

echo '<pre>'; print_r($kArr);

Where I am wrong? if there is another method then please let me know.

What exactly is "this format"? Are you looking for a way to recursively print the values? — Nico Haase
– Nico Haase, Commented Nov 27, 2018 at 10:47
are you just trying to convert multi-dimensional array into a 2d array? — treyBake
– treyBake, Commented Nov 27, 2018 at 10:49
Yes, I mentioned the result which format I want. If the array has inner array then the result must be print as per my formatted. — Vipul Jethva
– Vipul Jethva, Commented Nov 27, 2018 at 10:49
Possible duplicate of How to Flatten a Multidimensional Array? — ponury-kostek
– ponury-kostek, Commented Nov 27, 2018 at 10:50
@ponury-kostek Can you please help me to use my array and result which I want? — Vipul Jethva
– Vipul Jethva, Commented Nov 27, 2018 at 10:55

RomMer · Accepted Answer · 2018-11-27 11:02:38Z

1

foreach ($arr as $k => $v) {
        if (is_array($v)) {
            foreach ($v as $k2 => $v2) {
                echo "$v2\n";       
            }
        } else {
            echo "$v\n";
        }
    }

if you want to do it from scratch you can try something like this.

answered Nov 27, 2018 at 11:02

RomMer

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Comments

Sajjad Ali · Accepted Answer · 2018-11-27 11:12:22Z

1

To achieve your desired result you have to loop through your $arr variable and check if it's an array using is_array function. If it is an array then loop through that array and out put the values. Try the following code.

$arr = array(0 => 1,
        array(
            0 => 'a',
            1 => 'b'
        ),
        'c' => '0'
    );
foreach($arr as $key => $value)
{
    if(is_array($value))
    {
        foreach($value as $inner_key => $inner_value)
        {
            echo "<br>";
            echo $inner_value;
        }       
    }
    else
    {
            echo "<br>";
            echo $value;        
    }
}

edited Nov 27, 2018 at 11:12

answered Nov 27, 2018 at 11:05

Sajjad Ali

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Comments

Serhii Andriichuk · Accepted Answer · 2018-11-27 11:26:51Z

1

I wrote a function that gets the values of the internal arrays and adds them in the correct order:

function array_values_recursive(array $array)
{
    $values = array_values($array);

    foreach ($values as $key => $value) {
        if (is_array($value)) {
            $innerValues = array_values_recursive($value);

            if ($innerValues) {
                array_splice($values, $key, 1, $innerValues);
            }
        }
    }

    return $values;
}

Example:

$array = array(
    0 => 1,
    array(
        0 => 'a',
        1 => 'b'
    ),
    'c' => '0'
);

$values = array_values_recursive($array);

echo(implode(PHP_EOL, $values));

Will print:

1
a
b
0

answered Nov 27, 2018 at 11:26

Serhii Andriichuk

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Comments

ponury-kostek · Accepted Answer · 2018-11-27 11:21:16Z

0

function flatten($array) {
    // flattened array
    $flat = [];
    // flattening anonymous function 
    $flatten = function ($array) use (&$flatten, &$flat) {
        // loop over an array
        foreach ($array as $item) {
            // if item is array, use flattening function 
            if (is_array($item)) {
                $flatten($item);
            } else {
                // else push item to flattened array
                $flat[] = $item;
            }
        }
    };
    // initial call of flattening function
    $flatten($array);

    // return flattened array
    return $flat;
}

var_dump(flatten([
    0 => 1,
    [
        0 => 'a',
        1 => 'b'
    ],
    'c' => '0'
]));

edited Nov 27, 2018 at 11:21

answered Nov 27, 2018 at 11:14

ponury-kostek

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Comments

kopiro · Accepted Answer · 2018-11-27 10:51:44Z

-1

Just use array_walk_recursive.

$r = [];
array_walk_recursive($arr, function ($e) use (&$r) {
    $r[] = $e;
});

answered Nov 27, 2018 at 10:51

kopiro

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