PHP merge two arrays and keep keys - php

Question

I'm not able to get this code working:
$paths = ['2014/','2014/04/','2015/'];
$tree = array();
foreach ($paths as $path) {
$dir_exploded = explode("/", $path);
array_pop($dir_exploded);
$tmp = array();
for ($i = count($dir_exploded) - 1; $i >= 0; $i--) {
if ($i == count($dir_exploded) - 1) {
$children = array();
} else {
$children = array($tmp);
}
$tmp = array('text' => $dir_exploded[$i], 'children' => $children);
}
$tree = array_replace_recursive($tree, $tmp);
}
echo(json_encode(array(array('text' => '/', 'children' => array($tree)))));
I get:
[
{
"text": "/",
"children": [
{
"text": "2015",
"children": [
{
"text": "04",
"children": []
}
]
}
]
}
]
So 2014 have been delete by the merge of this 2 arrays. I would like to get:
[
{
"text": "/",
"children": [
{
"text": "2014",
"children": [
{
"text": "04",
"children": []
}
]
},{
"text": "2015",
"children": []
}
]
}
]
At least I want to send this tree by json using json_encode, or a better way if you know one.

Answer 1

Try this code, I have change little code of yours and add some extra paths.
$paths = array('2014/', '2014/04/','2014/03/','2015/');
$new_tree = $temp_new_tree = array();
foreach ($paths as $path)
{
$dir_exploded = explode("/", $path);
array_pop($dir_exploded);
$temp_new_tree = (!empty($new_tree)) ? $new_tree : array();
$tmp = $tree = array();
for ($i = count($dir_exploded) - 1; $i >= 0; $i--)
{
if ($i == count($dir_exploded) - 1) {
$children = array();
} else {
$children = array($tmp);
}
$tmp = array('text' => $dir_exploded[$i], 'children' => $children);
}
$tree = array_replace_recursive($tree, $tmp);
$new_tree[$dir_exploded[0]] = $tree;
if(array_key_exists($dir_exploded[0], $temp_new_tree))
{
$new_tree[$dir_exploded[0]]['children'] = array_merge($new_tree[$dir_exploded[0]]['children'], $temp_new_tree[$dir_exploded[0]]['children']);
}
}
//echo json_encode(array(array('text' => '/', 'children' => array($new_tree))));
$new_tree = array_shift(array_chunk($new_tree, count($new_tree)));
echo json_encode(array(array('text' => '/', 'children' => $new_tree)));
Output will be like this:--
[
{
text: "/",
children: [
{
text: "2014",
children: [
{
text: "03",
children: [ ]
},
{
text: "04",
children: [ ]
}
]
},
{
text: "2015",
children: [ ]
}
]
}
]
Hope this will help you...

Answer 2

You can use following;
<?php
$paths = array('2014/01/02','2014/04/03','2015/07');
$all = array();
foreach ($paths as $path) {
$temp = explode("/", $path);
$all[] = tree($temp, 0);
}
var_dump($all);
function tree($arr, $i) {
if (count($arr) == ($i + 1)) return $arr[$i];
return array(
"text" => $arr[$i],
"children" => tree($arr, $i+1)
);
}
Here is a working demo: codepad