Recursive JSON transformation - php

Question

Suppose I have a JSON string:
$json = '{"lemon":"test",
"orange":["toto", "tata", "tete"],
"zob":[{"id":"0"}, {"id":"1"}]}';
I'd like to cycle through that encoded object to modify every string in it, so I have a recursive function:
function doObject($__obj){
$__obj = cycleObject($__obj);
return $__obj;
}
function cycleObject($__obj){
$type = gettype($__obj);
foreach($__obj as $var => &$val){
switch(gettype($val)){
case 'object':
cycleObject($val);
break;
case 'array':
cycleObject($val);
break;
case 'string':
if($type == 'object'){
$__obj->$var = $val.'-ok';
}else{
if($type == 'array'){
$__obj[$var] = $val.'-ok';
}
}
break;
}
}
return $__obj;
}
And I call the function:
$obj = doObject(json_decode($json));
var_dump($obj);
Which gives :
object(stdClass)#1 (3) {
["lemon"]=> string(7) "test-ok"
["orange"]=> array(3) {
[0]=> string(4) "toto"
[1]=> string(4) "tata"
[2]=> string(4) "tete" }
["zob"]=> array(2) {
[0]=> object(stdClass)#2 (1) {
["id"]=> string(4) "0-ok" }
[1]=> object(stdClass)#3 (1) {
["id"]=> string(4) "1-ok" }
}
}
Now my problem is, for some reason, I am unable to modify directly inside an array composed by string, or should I say, the modified string inside an array (and not inside an object inside an array) because the array loses its reference. How do I fix that so in orange I instead obtain:
[0]=> string(7) "toto-ok"
[1]=> string(7) "tata-ok"
[2]=> string(7) "tete-ok"

Answer 1

Your array of strings isn't being scrutinized correctly by your function. Basically, in each array you need a second check to see if you are dealing with another array/object or a string, otherwise regular arrays of strings are being bypassed....oddly enough. The following should work for you:
$json = '{"lemon":"test",
"orange":["toto", "tata", "tete"],
"zob":[{"id":"0"}, {"id":"1"}]}';
function doObject($__obj){
$__obj = cycleObject($__obj);
return $__obj;
}
function cycleObject($__obj){
foreach($__obj as $key => &$val){
if(is_object($val)) {
cycleObject($val);
}
if(is_array($val)) {
foreach($val as &$v) {
if(is_object($v) || is_array($v)) {
cycleObject($v);
} else {
$v .= '-ok';
}
}
}
if(is_string($val)) {
$val .= '-ok';
}
}
return $__obj;
}
$obj = doObject(json_decode($json));
var_dump($obj);
This produced the results you were looking for in my local environment.
object(stdClass)#1 (3) {
["lemon"]=>
string(7) "test-ok"
["orange"]=>
array(3) {
[0]=>
string(7) "toto-ok"
[1]=>
string(7) "tata-ok"
[2]=>
string(7) "tete-ok"
}
["zob"]=>
array(2) {
[0]=>
object(stdClass)#2 (1) {
["id"]=>
string(4) "0-ok"
}
[1]=>
object(stdClass)#3 (1) {
["id"]=>
string(4) "1-ok"
}
}
}