recursive function to remove '<' and '>' from array keys - php

Question

I'm trying to get an xml file from an associative array having array keys encapsuled into '<' and '>'
I've tried to use a recursive function but it works correctly only on the first level:
Please remember my final goal is to create an xml, so any appropriate suggest is welcome
this is what I've done so far:
$arr =
array('<Lev0_0>' => 0,
'<Lev0_1>' => 1,
'<Lev0_2>' => array (
'<Lev1_0>' => 2,
'<Lev1_1>' => 3
)
);
print_r(RepairKeysMultidimensional($arr));
function RepairKeysMultidimensional(array $array){
$Keys = array();
foreach($array as $Key => $Value){
$NewKey = str_replace(array('<','>'),'',$Key);
$array[$NewKey] = $Value;
unset($array[$Key]);
if(is_array($Value)){
RepairKeysMultidimensional($Value);
}
}
return $array;
}
the output is:
Array (
[Lev0_0] => 0
[Lev0_1] => 1
[Lev0_2] => Array (
[] => 2
[] => 3
)
)

Answer 1

If that's the structure and you never expect < or > as part of the values, you don't need to loop over it just json_encode it, strip out the chars and the json_decode it back into an array.
<?php
$arr = array(
'<Lev0_0>' => 0,
'<Lev0_1>' => 1,
'<Lev0_2>' => array (
'<Lev1_0>' => 2,
'<Lev1_1>' => 3
)
);
$arr = json_decode(str_replace(array('<','>'), '', json_encode($arr)), true);
print_r($arr);
https://3v4l.org/2d7Hq
Result:
Array
(
[Lev0_0] => 0
[Lev0_1] => 1
[Lev0_2] => Array
(
[Lev1_0] => 2
[Lev1_1] => 3
)
)

Answer 2

Try to add affectation in your if statement:
function RepairKeysMultidimensional(array $array){
$Keys = array();
foreach($array as $Key => $Value){
$NewKey = str_replace(array('<','>'),'',$Key);
$array[$NewKey] = $Value;
unset($array[$Key]);
if (is_array($Value)) {
$array[$NewKey] = RepairKeysMultidimensional($Value);
}
}
return $array;
}

Answer 3

you are not affecting the result of the second call to the outer array!
Try this :
<?php
$arr =
array('<Lev0_0>' => 0,
'<Lev0_1>' => 1,
'<Lev0_2>' => array (
'<Lev1_0>' => 2,
'<Lev1_1>' => 3
)
);
echo str_replace(array('<','>'),'','<Lev0>');
echo '<br/><br/>';
print_r(RepairKeysMultidimensional($arr));
function RepairKeysMultidimensional(array $array){
$Keys = array();
foreach($array as $Key => $Value){
$NewKey = str_replace(array('<','>'),'',$Key);
unset($array[$Key]);
if(is_array($Value)){
$array[$NewKey] = RepairKeysMultidimensional($Value);
}else{
$array[$NewKey] = $Value;
}
}
return $array;
}
The output of this is :
Array (
[Lev0_0] => 0
[Lev0_1] => 1
[Lev0_2] => Array (
[Lev1_0] => 2
[Lev1_1] => 3 ) )