如何循环并清理递归数组（PHP）

Question

I'm struggling with the final step on a function that I am writing to clean up a multi-dimensional array. I want the function to loop through the array (and any sub-arrays) and then return a cleaned array.

Whilst I can use array_walk_recursive to output the cleaned data, I'm struggling with returning the data as an array in the same structure as the inputted. Can anyone help? Any help greatly appreciated....

Here's my code:

function process_data($input){
    function clean_up_data($item, $key)
    {
        echo strip_tags($item) . ' '; // This works and outputs all the cleaned data
        $key = strip_tags($item);     // How do I now output as a new array??
        return strip_tags($item);
    }
    array_walk_recursive($input, 'clean_up_data');
}

$array = process_data($array);  // This would be the ideal usage
print_r($array);  // Currently this outputs nothing

Answer 1

you can use array_walk_recursive like that :

<?php
$arr = array(...);
function clean_all($item,$key)
{
$item = strip_tags($item);
}
array_walk_recursive($arr , 'clean_all');
?>

OR :

this is a recursive function , i think it solves your problem :

<?php
    function clean_all($arr)
    {
    foreach($arr as $key=>$value)
    {
       if(is_array($value)) $arr[$key] = clean_all($value);
       else  $arr[$key] = strip_tags($value);
    }
    return $arr;
    }

     ?>