I have an array similar to this below. I need to find a way to extract values by using a key/value pair for instance by using 'parent_id' => 3. I want to get all values for said array ( id = 2, label = Content Creation, link_url = '', parent_id = 3 ).
I've tried using array_intersect() without any success.
Thank You for your assistance.
Array (
[0] => Array ( [id] => 1 [label] => Web Development [link_url] => [parent_id] => 1 )
[1] => Array ( [id] => 2 [label] => Content Creation [link_url] => [parent_id] => 3 )
[2] => Array ( [id] => 3 [label] => PHP Jobs [link_url] => /simple_link.php [parent_id] => 1 )
[3] => Array ( [id] => 4 [label] => OSCommerce projects [link_url] => /another_link.php [parent_id] => 4 )
)
I thik you can loop in your array and match your desidered parent_id with an if condition
foreach($array as $data)
{
if($data['parent_id'] == '3')
{
echo $data['id'] . ' ' . $data['label'] . ' ' . $data['link_url'];
}
}
You can also use array_filter for these sort of problems
$matching_results = array_filter($data, function($item) {
return ($item['parent_id'] == 3);
});
It will cycle through the data and $matching_results will be an array of each $item that returns true
Related
I have a vendor data array listed as a tree structure and each vendor have a type.
These are types of vendor and its id:
Agency = 1
Branch Agency = 2
Wholsaler = 3
Smartshop = 4
Example: ['type']=>2 (here this vendor is a branch agency).
My question is: How can I get the count of Branch agencies are in this array, same count of wholesaler and smart shop?
Desired result:
[2 => 2, 3 => 2, 4 => 1]
Here is my dynamic generated array:
Array
(
[2] => Array
(
[id] => 2
[type] => 2
[name] => R-1 Agency
[parent] => 1
[children] => Array
(
[3] => Array
(
[id] => 3
[type] => 3
[name] => R-1-W-1
[parent] => 2
[children] => Array
(
[11] => Array
(
[id] => 11
[type] => 4
[name] => mdf,lk
[parent] => 3
[children] => Array
(
)
)
)
)
)
)
[38] => Array
(
[id] => 38
[type] => 2
[name] => sndflk
[parent] => 1
[children] => Array
(
[40] => Array
(
[id] => 40
[type] => 3
[name] => new one
[parent] => 38
[children] => Array
(
)
)
)
)
)
I used this function :
function take_types($array){
foreach ($array as $key => $value) {
$types[] = $value['type'];
if(!empty($value['children'])){
$this->take_types($value['children']);
}
}
return $types;
}
When I use the above function the output is like this:
Array
(
[0] => 2
[1] => 2
)
I only get two values, I need to get the count of each vendor type.
There will be many techniques to recursively process your tree data. I'll offer a native function style and a custom recursive style.
array_walk_recursive() visits all of the "leaf nodes", so you only need to check the key and push the value into a variable which can be accessed outside of that function's scope -- this is why "modifying by reference" is vital.
Code: (Demo)
// I removed the chunky $tree declaration from my post, see the demo
$result = [];
array_walk_recursive(
$tree,
function($v, $k) use (&$result) {
if ($k === 'type') {
$result[] = $v;
}
}
);
var_export(array_count_values($result));
Or
function recursiveTypeCount($array, $output = []) {
foreach($array as $item) {
if (!isset($output[$item['type']])) {
$output[$item['type']] = 1;
} else {
++$output[$item['type']];
}
if ($item['children']) {
$output = recursiveTypeCount($item['children'], $output);
}
}
return $output;
}
var_export(recursiveTypeCount($tree));
Both will display:
array (
2 => 2,
3 => 2,
4 => 1,
)
I want to create a new array using loop(foreach).
My array is looking like this :
$q_list = Array(
[0] => Array
(
[id] => 2
[subject_id] => 1
[question] => Question No One
[recordstatus] => 1
)
[1] => Array
(
[id] => 3
[subject_id] => 1
[question] => Question No Two
[recordstatus] => 1
)
[2] => Array
(
[id] => 4
[subject_id] => 1
[question] => Question No Three
[recordstatus] => 1
)
)
I have done like this but not working :
foreach ($q_list as $key => $q) {
$question[] = $q['question'];
$question[] = $q['subject_id'];
}
This will group your array on subject_id.
I use subject_id as the key in a multidimensional array that way it will just add the question arrays to the correct subarray.
foreach($q_list as $q){
$res[$q['subject_id']][] = $q;
}
var_dump($res);
https://3v4l.org/HnlYW
I am looking to convert a multi dimensional array into another multidimensional array using a recursive function.
Source array :
Array
(
[1] => Array
(
[id] => 1
[source_name] => kk56ca1d0f2378f
[company_id] => 1
[lft] => 1
[rgt] => 18
[parent_id] => 0
[children] => Array
(
[2] => Array
(
[id] => 2
[source_name] => kk56ca1d17f3f63
[company_id] => 1
[lft] => 2
[rgt] => 3
[parent_id] => 1
[children] => Array
(
)
)
[3] => Array
(
[id] => 3
[source_name] => kk56ca1d1ebe975
[company_id] => 1
[lft] => 4
[rgt] => 13
[parent_id] => 1
[children] => Array
(
[6] => Array
(
[id] => 6
[source_name] => kk56ca1fc882ac0
[company_id] => 1
[lft] => 5
[rgt] => 10
[parent_id] => 3
[children] => Array
(
)
)
)
)
)
)
)
which I need to get into the format of
Array
(
[0] => Array
(
[id] => 1
[text] => kk56ca1d0f2378f
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 2
[text] => kk56ca1d17f3f63
[parent_id] => 1
[nodes] => Array
(
)
)
[1] => Array
(
[id] => 3
[text] => kk56ca1d1ebe975
[parent_id] => 1
[nodes] => Array
(
[0] => Array
(
[id] => 6
[text] => kk56ca1fc882ac0
[parent_id] => 3
[nodes] => Array
(
)
)
[1] => Array
(
[id] => 15
[text] => kk
[parent_id] => 3
[nodes] => Array
(
)
)
)
)
)
)
)
I have been trying for hours and getting nowhere with this. Any help would be really appreciated.
The source array has associative indexes (though they are numbers) and the destination array has numerical indexes. Besides this, just need to remove a few indexes and change names of a few.
EDIT :
Specific changes :
change index name source_name to text
change index name children to nodes
unset indexes lft, rgt, company_id
I do not have much experience with recursion so I have trying fruitlessly.
This is what I could come up with :
// pass array of nodes
function convert_array($from){
// this is a node
if(isset($from['source_name']))
{
$temp = array();
$temp['id'] = $from['id'];
convert_array($from['children']);
}
// this is an array of nodes
else
{
foreach($from as $arr)
{
$ret = convert_array($arr);
print_r($ret);
}
}
}
But I am not able to understand what data to be returned and how the new array builds up from the return values.
Here the working function:
function convert_array( $array )
{
$retval = array();
foreach( $array as $row )
{
$child = array();
$child['id'] = $row['id'];
$child['text'] = $row['source_name'];
$child['parent_id'] = $row['parent_id'];
if( count( $row['children'] ) )
{ $child['nodes'] = convert_array( $row['children'] ); }
else
{ $child['nodes'] = array(); }
$retval[] = $child;
}
return $retval;
}
3v4l demo
I think it is self-explanatory, BTW: we init an empty array ($retval), then we perform a foreach loop through all array argument: for each element, we init a new array and we add it id, source_name as text and parent_id; if the children index has elements, we perform a recursive call to fill nodes array index, otherwise we set it to empty array.
I want to perform an intersection of two arrays that have different structures, but both have one key common (fid). I want a new (filtered second) array after intersection with first array. below is my code and two arrays :
first array:
Array
(
[0] => Array
(
[fid] => 1
)
[1] => Array
(
[fid] => 3
)
)
Second array:
Array
(
[0] => Array
(
[fid] => 9
[functionality] => testing
[funcat_id] => 1
[name] => functionality
)
[1] => Array
(
[fid] => 1
[functionality] => add functionality
[funcat_id] => 1
[name] => functionality
)
[2] => Array
(
[fid] => 2
[functionality] => view functionality category
[funcat_id] => 1
[name] => functionality
)
[3] => Array
(
[fid] => 3
[functionality] => view functionality
[funcat_id] => 1
[name] => functionality
)
[4] => Array
(
[fid] => 4
[functionality] => edit functionality
[funcat_id] => 1
[name] => functionality
)
)
I want this Output :
Array
(
[0] => Array
(
[fid] => 1
[functionality] => add functionality
[funcat_id] => 1
[name] => functionality
)
[1] => Array
(
[fid] => 3
[functionality] => view functionality
[funcat_id] => 1
[name] => functionality
)
)
I tried this code but I'm not getting the right answer:
$result=array_intersect($array1,$array2);
//Or this also
$result=recursive_array_intersect_key($array1,$array2);
Please let me know, if any one can do this ?
I do not know if a function does exists to do this outright, but alternatively, you can just loop them instead:
$result = array();
foreach($array2 as $val2) {
foreach ($array1 as $val1) {
if($val2['fid'] == $val1['fid']) {
$result[] = $val2;
}
}
}
echo '<pre>';
print_r($result);
Sample Output
Or if you're using PHP 5.5 or greater:
$val1 = array_column($array1, 'fid');
$result = array_filter($array2, function($val2) use($val1) {
return in_array($val2['fid'], $val1);
});
foreach($array2 as $val)
{
$i=0;
foreach($array1 as $val1)
{
if($val['fid']==$val1['fid'])
{
$i++;
}
}
if($i!=0)
{
$a[]=$val;
}
}
print_r($a);
I want to create a function that returns the full path from a set node, back to the root value. I tried to make a recursive function, but ran out of luck totally. What would be an appropriate way to do this? I assume that a recursive function is the only way?
Here's the array:
Array
(
[0] => Array
(
[id] => 1
[name] => Root category
[_parent] =>
)
[1] => Array
(
[id] => 2
[name] => Category 2
[_parent] => 1
)
[2] => Array
(
[id] => 3
[name] => Category 3
[_parent] => 1
)
[3] => Array
(
[id] => 4
[name] => Category 4
[_parent] => 3
)
)
The result I want my function to output when getting full path of node id#4:
Array
(
[0] => Array
(
[id] => 1
[name] => Root category
[_parent] =>
)
[1] => Array
(
[id] => 3
[name] => Category 3
[_parent] => 1
)
[2] => Array
(
[id] => 4
[name] => Category 4
[_parent] => 3
)
)
The notoriously bad example of my recursive skills:
function recursive ($id, $array) {
$innerarray = array();
foreach ($array as $k => $v) {
if ($v['id'] === $id) {
if ($v['_parent'] !== '') {
$innerarray[] = $v;
recursive($v['id'], $array);
}
}
}
return $innerarray;
}
assuming "id" in your sub array is that sub arrays index + 1 inside the parent array (otherwise you would need to do a search in the array each time), you could do this:
$searchNode = 4;
while ($searchNode)
{
$result[] = $nodes[$searchNode - 1];
$searchNode = $nodes[$searchNode - 1]["id"];
}
$result = array_reverse($result);