Multidimensional Array to String

Question

I am trying to convert a multidimensional array into a string with a particular format.

function convert_multi_array($array) {
    foreach($array as $value)          


        

Answer 1

You also can just take the original implementation from the PHP join manual (http://php.net/manual/en/function.join.php)

function joinr($join, $value, $lvl=0)
{
    if (!is_array($join)) return joinr(array($join), $value, $lvl);
    $res = array();
    if (is_array($value)&&sizeof($value)&&is_array(current($value))) { // Is value are array of sub-arrays?
        foreach($value as $val)
            $res[] = joinr($join, $val, $lvl+1);
    }
    elseif(is_array($value)) {
        $res = $value;
    }
    else $res[] = $value;
    return join(isset($join[$lvl])?$join[$lvl]:"", $res);
}

$arr = array(array("blue", "red", "green"), array("one", "three", "twenty"));
joinr(array("&", "~"), $arr);

This is recursive, so you even can do

$arr = array(array("a", "b"), array(array("c", "d"), array("e", "f")), "g");
joinr(array("/", "-", "+"), $arr);

and you'll get

a-b/c+d-e+f/g