PHP Array sorting by parent

PHP Array sorting by parent - php

I'm building a comment system myself, currently. Just ordering the comments like this is not going to really give you a strong relationship between comments (a parent-child relationship).
In this case, I'd do the following:
$comments = array();
foreach ($results as $result) {
if ($result["parent"]) {
$result["children"] = array();
$comments[$result["id"]] = $result;
}
}
// Have yet to do this a better way. Second loop is there for a reason.
foreach ($results as $result) {
if ($result["parent"])
$comments[$result["parent"]]["children"] = $result;
}
var_dump($comments);
// you can now sort on createdAt using uasort(array $array, callable $func)
uasort($comments, function ($a, $b) {
if ($a["createdAt"] == $b["createdAt"])
return 0;
return ($a["createdAt"] > $b["createdAt"]) ? 1 : -1;
// reverse this to change sort order
});

uasort($array, function($a, $b) {
// sort by date first
if (#$a["createdAt"] == #$b["createdAt"]){
return 0;
}
return (#$a["createdAt"] > #$b["createdAt"]) ? 1 : -1;
});
$array_asc = array();
foreach($array as $key => $val){
// create an array with ids as keys and children
// with the assumption that parents are created earlier.
// store the original key
$array_asc[$val['id']] = array_merge($val, array('org_key' => $key));
if ($val['parent']){
$array_asc[$val['parent']]['children'][] = $val['id'];
}
}
$array_out = array();
// get a flat array again
foreach($array_asc as $val){
if ($val['parent']){
continue;
}
add_to_output($array_out, $val, $array_asc);
}
function add_to_output(&$array_out, $val, $array_asc){
$array_out[$val['org_key']] = $val;
if (sizeof($val['children'])){
foreach($val['children'] as $id){
add_to_output($array_out, $array_asc[$id], $array_asc);
}
}
unset($array_out[$val['org_key']]['children'], $array_out[$val['org_key']]['org_key']);
}
not tested.

you can user the php array_multisort
you probably want to build your array like this
<?php
function array_orderby()
{
$args = func_get_args();
$data = array_shift($args);
foreach ($args as $n => $field) {
if (is_string($field)) {
$tmp = array();
foreach ($data as $key => $row)
$tmp[$key] = $row[$field];
$args[$n] = $tmp;
}
}
$args[] = &$data;
call_user_func_array('array_multisort', $args);
return array_pop($args);
}
?>
<?php
$data[] = array('createdAt' => 67, 'parent' => 2);
$data[] = array('createdAt' => 86, 'parent' => 1);
$data[] = array('createdAt' => 85, 'parent' => 6);
$data[] = array('createdAt' => 98, 'parent' => 2);
$data[] = array('createdAt' => 86, 'parent' => 6);
$data[] = array('createdAt' => 67, 'parent' => 7);
// Pass the array, followed by the column names and sort flags
$sorted = array_orderby($name_of_array, 'createdAt', SORT_DESC, 'parent', SORT_ASC);
?>

Related

Making a nested array in php

Probably my question is too much common or easy for you, but I really have no idea how to do it. Trying all everything I know and lots of googling didn't help me.
I just need a nested array.
Here is my PHP code:
EDITED
Corrected: $data['product_names'][$language['language_id']][] = array(
$data['product_names'] = array();
foreach ($data['languages'] as $language) {
$product_names_info = $this->model_catalog_category->getCategoryMultiLang($this->request->get['product_id'], $language['language_id']);
if ($product_names_info) {
$data['product_names'][$language['language_id']][] = array(
'category_id' => $product_names_info['category_id'],
'language_id' => $product_names_info['language_id'],
'name' => $product_names_info['name']
);
}
}
print_r($data['product_names']);
The result that I get:
Array
(
[5] => Array
(
[0] => Array
(
[category_id] =>
[language_id] =>
[name] =>
)
)
[2] => Array
(
[0] => Array
(
[category_id] =>
[language_id] =>
[name] =>
)
)
[4] => Array
(
[0] => Array
(
[category_id] =>
[language_id] =>
[name] =>
)
)
...
The result should look like this:
Array
(
[0] => Array
(
[language_id] => 1
[category_id] => 8
[name] => book
)
[1] => Array
(
[language_id] => 5
[category_id] => 188
[name] => magazine
)
...
)
Array
(
[0] => Array
(
[language_id] => 1
[category_id] => 8
[name] => buch
)
...
UPDATED
The result of print_r($product_names_info); inside foreach ($data['languages'] as $key => $language) {
Array
(
[0] => Array
(
[language_id] => 5
[category_id] => 8
[name] => Gecelik
)
[1] => Array
(
[language_id] => 5
[category_id] => 188
[name] => Sabahlık
)
...
)
Array
(
[0] => Array
(
[language_id] => 2
[category_id] => 8
[name] => لباس خواب
)
[1] => Array
(
[language_id] => 2
[category_id] => 188
[name] => Sabahlık
)
Thanks for any kind help.

$data['product_names'] = array();
foreach ($data['languages'] as $language) {
$product_names_info = $this->model_catalog_category->getCategoryMultiLang($this->request->get['product_id'], $language['language_id']);
if ($product_names_info) {
foreach ($product_names_info as $key => $value) {
$data['product_names'][$language['language_id']][] = array(
'category_id' => $value['category_id'],
'language_id' => $value['language_id'],
'name' => $value['name'],
);
}
}
}
print_r($data['product_names']);
I think you were missing foreach for the data you fetched into var $product_names_info

How to get list all multidimensional array with parent index

How to get list all multidimensional array with parent index. All index in each level is unique and i want to show all list with the level.
example my arrays:
Array(
[1] => Array(
[2] => Array(
[3] =>
[4] =>
[7] =>
)
)
[6] => Array(
[11] => Array(
[12] => Array(
[17] =>
)
)
)
[2] => Array(
[13] => Array(
[14] =>
)
)
)
I want to get output like this:
Array
(
[1]=array([level] = 1)
[2]=array([level] = 2)
[3]=array([level] = 3)
[4]=array([level] = 3)
[7]=array([level] = 3)
[6]=array([level] = 1)
[11]=array([level] = 2)
[12]=array([level] = 3)
[17]=array([level] = 4)
...
)

Here is a solution using a recursive function. Assuming your array will have a NULL value if there is no more child/nested arrays.
$arr = array(1 => array(2 => array(3 => NULL,
4 => NULL,
7 => NULL )),
6 => array(11 => array(12 => array(17 =>NULL))),
2 => array(13 => array(14 => NULL)));
$rslt_arr = array();
function traverse_arr($array, $level)
{
$level++;
foreach ($array as $key => $value){
if($value != NULL){
traverse_arr($value, $level);
}
$GLOBALS['rslt_arr'][$key]['level'] = $level;
}
}
traverse_arr($arr, 0);
echo '<pre>';
print_r($rslt_arr);
OUTPUT:
Array
(
[3] => Array
(
[level] => 3
)
[4] => Array
(
[level] => 3
)
[7] => Array
(
[level] => 3
)
[2] => Array
(
[level] => 1
)
[1] => Array
(
[level] => 1
)
[17] => Array
(
[level] => 4
)
[12] => Array
(
[level] => 3
)
[11] => Array
(
[level] => 2
)
[6] => Array
(
[level] => 1
)
[14] => Array
(
[level] => 3
)
[13] => Array
(
[level] => 2
)
)

array one format to another

I have one array in two format. I want to change array from
Array
(
[step_number] => 4
[app_id] => Array
(
[0] => 2
[1] => 3
)
[formdata] => Array
(
[0] => Array
(
[name] => app_id[]
[value] => 2
)
[1] => Array
(
[name] => app_id[]
[value] => 3
)
[2] => Array
(
[name] => fieldval[2][2][]
[value] => 1
)
[3] => Array
(
[name] => fieldval[3][3][]
[value] => 200
)
[4] => Array
(
[name] => fieldval[3][3][]
[value] => day
)
[5] => Array
(
[name] => title
[value] => new plan
)
[6] => Array
(
[name] => feature_plan
[value] => 3
)
[7] => Array
(
[name] => plan_type
[value] => free
)
[8] => Array
(
[name] => price
[value] =>
)
[9] => Array
(
[name] => sell_type
[value] => us
)
)
)
this format to
Array
(
[app_id] => Array
(
[0] => 2
[1] => 3
)
[fieldval] => Array
(
[2] => Array
(
[2] => Array
(
[0] => 1
)
)
[3] => Array
(
[3] => Array
(
[0] => 200
[1] => day
)
)
)
[title] => new plan
[feature_plan] => 3
[plan_type] => free
[price] =>
[sell_type] => us
)
these are are one array into two format. i have data in to first array format and i want to change that format to second array type format.
please tell me how i am trying this for 2 days but not succeed.

Here is a function you could use to produce that conversion:
function convert_formdata($input) {
$output = array();
foreach($input['formdata'] as $data) {
$keys = preg_split("#[\[\]]+#", $data['name']);
$value = $data['value'];
$target = &$output;
foreach($keys as $key) {
// Get index for "[]" reference
if ($key == '') $key = count($target);
// Create the key in the parent array if not there yet
if (!isset($target[$key])) $target[$key] = array();
// Move pointer one level down the hierarchy
$target = &$target[$key];
}
// Write the value at the pointer location
$target = $value;
}
return $output;
}
You would call it like this:
$output = convert_formdata($input);
See it run on eval.in for the given input. The output is:
array (
'app_id' =>
array (
0 => 2,
1 => 3,
),
'fieldval' =>
array (
2 =>
array (
2 =>
array (
0 => 1,
),
),
3 =>
array (
3 =>
array (
0 => 200,
1 => 'day',
),
),
),
'title' => 'new plan,',
'feature_plan' => 3,
'plan_type' => 'free',
'price' => NULL,
'sell_type' => 'us',
)

Recursive function for building array from tree

I have an array that looks like this:
Array (
[0] => Array
(
[term_id] => 23
[name] => testasdf
[depth] => 1
)
[1] => Array
(
[term_id] => 26
[name] => asdf
[depth] => 2
)
[2] => Array
(
[term_id] => 31
[name] => Another level deep
[depth] => 3
)
[3] => Array
(
[term_id] => 32
[name] => Another level deep
[depth] => 2
)
[4] => Array
(
[term_id] => 24
[name] => testasdf
[depth] => 1
)
[5] => Array
(
[term_id] => 27
[name] => asdf
[depth] => 1
)
)
Here is the recursive function that I'm using, it works except in some cases (where the depth is greater it seems.
function process(&$arr, &$prev_sub = null, $cur_depth = 1) {
$cur_sub = array();
while($line = current($arr)){
if($line['depth'] < $cur_depth){
return $cur_sub;
}elseif($line['depth'] > $cur_depth){
$prev_sub = $this->process($arr, $cur_sub, $cur_depth + 1 );
}else{
$cur_sub[$line['term_id']] = array('term_id' => $line['term_id'], 'name' => $line['name']);
$prev_sub =& $cur_sub[$line['term_id']];
next($arr);
}
}
return $cur_sub;
}
This is how the results look:
Array
(
[23] => Array
(
[26] => Array
(
[31] => Array
(
[term_id] => 31
[name] => Another level deep
)
)
[32] => Array
(
[term_id] => 32
[name] => Another level deep
)
)
[24] => Array
(
[term_id] => 24
[name] => testasdf
)
[27] => Array
(
[term_id] => 27
[name] => asdf
)
)
Any idea how I can have it so the term_id and name is shown for all depths?

try this:
function process(&$arr, &$prev_sub = null, $cur_depth = 1) {
$cur_sub = array();
while($line = current($arr)){
if($line['depth'] < $cur_depth){
return $cur_sub;
}
if($line['depth'] > $cur_depth){
$prev_sub = $this->process($arr, $cur_sub, $cur_depth + 1 );
}
$cur_sub[$line['term_id']] = array('term_id' => $line['term_id'], 'name' => $line['name']);
$prev_sub =& $cur_sub[$line['term_id']];
next($arr);
}
return $cur_sub;
}

Array filteration PHP

I have an array with values like:
Array
(
[0] => Array
(
[parent] => Basic
[parentId] => 1
[child] => Birthday
[childId] => 2
)
[1] => Array
(
[parent] => Basic
[parentId] => 1
[child] => Gender
[childId] => 3
)
[2] => Array
(
[parent] => Geo
[parentId] => 10
[child] => Current City
[childId] => 11
)
[3] => Array
(
[parent] => Known me
[parentId] => 5
[child] => My personality
[childId] => 7
)
[4] => Array
(
[parent] => Known me
[parentId] => 5
[child] => Best life moment
[childId] => 8
)
)
And I want to filter this array such that their filtration based on parent index, and the final result would be like:
Array
(
[0] => Array
(
[parent] => Basic
[parentId] => 1
[child] => Array
(
[0] => Birthday
[1] => Gender
)
)
[1] => Array
(
[parent] => Geo
[parentId] => 10
[child] => Array
(
[0] => Current City
)
)
[2] => Array
(
[parent] => Known me
[parentId] => 5
[child] => Array
(
[0] => My personality
[1] => Best life moment
)
)
)
For that I coded :
$filter = array();
$f = 0;
for ($i=0; $i<count($menuArray); $i++) {
$c = 0;
for( $b = 0; $b < count($filter); $b++ ){
if( $filter[$b]['parent'] == $menuArray[$i]['parent'] ){
$c++;
}
}
if ($c == 0) {
$filter[$f]['parent'] = $menuArray[$i]['parent'];
$filter[$f]['parentId'] = $menuArray[$i]['parentId'];
$filter[$f]['child'][] = $menuArray[$i]['child'];
$f++;
}
}
But it results :
Array
(
[0] => Array
(
[parent] => Basic
[parentId] => 1
[child] => Array
(
[0] => Birthday
)
)
[1] => Array
(
[parent] => Geo
[parentId] => 10
[child] => Array
(
[0] => Current City
)
)
[2] => Array
(
[parent] => Known me
[parentId] => 5
[child] => Array
(
[0] => My personality
)
)
)
Could anyone point out my missing LOC?

Try:
$filter = array();
foreach ($menuArray as $menu) {
if (!array_key_exists($menu['parent_id'], $filter)) {
$filter[$menu['parent_id']] = array(
'parent' => $menu['parent'],
'parent_id' => $menu['parent_id'],
'child' => array()
);
}
$filter[$menu['parent_id']]['child'][$menu['child_id']] = $menu['child'];
}
This will produce an array like:
Array
(
[1] => Array
(
[parent] => Basic
[parentId] => 1
[child] => Array
(
[2] => Birthday
[3] => Gender
)
)
[10] => Array
(
[parent] => Geo
[parentId] => 10
[child] => Array
(
[11] => Current City
)
)
[5] => Array
(
[parent] => Known me
[parentId] => 5
[child] => Array
(
[7] => My personality
[8] => Best life moment
)
)
)
Notice that the array indexes match the IDs. You can't loop this with a for loop but you can foreach ($filter as $parent_id=>$parent) correctly. If you want to you can change line 4 of my code to $filter['key_' . $menu['parent_id']] to force a string and a for loop will work

The next piece of code is completely untested, and based on the idea that it's sorted by parentId.
$filter = array();
$option = null;
for( $i = 0; $i < count( $menuArray ); $i++ ) {
if( count( $filter ) < 1 || $filter[count($filter)-1]['parentId'] != $menuArray['parentId'] ) {
if( $option != null ) {
$filter[] = $option;
}
$option = array(
"parent" => $menuArray[$i]['parent'],
"parentId" => $menuArray[$i]['parentId'],
"child" => array()
);
}
$option['child'][] = $menuArray[$i]['child'];
}
$filter[] = $option; // one last time, because we left the loop already.
unset( $option ); // we don't need it anymore.
What it does, it creates a $option for every parent. As soon as we hit the next parentId we add the current $option to the $filter array and create a new $option object.
All the children just keep getting added to the current $option.

We Keep Coding

PHP, A popular general-purpose scripting language that is especially suited to web development.

PHP Array sorting by parent - php

Related

Making a nested array in php

How to get list all multidimensional array with parent index

array one format to another

Recursive function for building array from tree

Array filteration PHP

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