Cakephp sort by first item in array - php

I have an array that looks like the following:
Data = array(
'Offer' => array(),
'Country' = array('Name' => Array())
)
Now if i want to sort on the value of the first item of the Name array how would i go around that?
Ive tried this so far:
$dataArray = $originalData['data'];
$dataArray = Set::sort($dataArray, '{n}.Country.Name', $direction);
However this did not work
Note im using CakePHP set::Sort is a part of Cakephp
Okay seems i wasnt clear enough so here is a more detailed explaination of my problem:
So ive created my own datasource in cake that collects data from an API.
The API returns data in a way that looks like this:
data = array(
'Offer' => array('id' => 2, 'name' = 'ExampleName'),
'Stat' => array('Stat1' = 1, 'Stat2' = 2),
'Country => array('Name' => array('name1','name2')
);
Now in order to make the user able to sort these data i have to make sure that i display correctly.
This works fine when there is only one value i.e:
$dataArray = $originalData['data'];
$dataArray = Set::sort($dataArray, '{n}.Stat.Stat1', 'ASC);
$originalData['data'] = $dataArray;
However country is an array so in order to "copy" the code above i need to use the first item of the Country['Name'] array.
to do something like this:
$dataArray = $originalData['data'];
$dataArray = Set::sort($dataArray, '{n}.Country.Name', $direction);
$originalData['data'] = $dataArray;
However the above code is failing ...

created test data:
$dataArray = array();
$data = array(
'Offer' => array('id' => 2, 'name' => 'ExampleName'),
'Stat' => array('Stat1' => 1, 'Stat2' => 2),
'Country' => array('Name' => array('z','name2'))
);
array_push($dataArray,$data);
$data = array(
'Offer' => array('id' => 2, 'name' => 'ExampleName'),
'Stat' => array('Stat1' => 1, 'Stat2' => 3),
'Country' => array('Name' => array('a','name2'))
);
array_push($dataArray,$data);
print_r(Set::sort($dataArray,'{n}.Country.Name','asc'));
Link with output array:https://gist.github.com/anonymous/6462971

Related

sorting a multi dimensional array in php

I have an array of arrays, as such
$statuses = array(
[0] => array('id'=>10, 'status' => 'active'),
[1] => array('id'=>11, 'status' => 'closed'),
[2] => array('id'=>12, 'status' => 'active'),
[3] => array('id'=>13, 'status' => 'stopped'),
)
I want to be able to make a new array of arrays and each of those sub arrays would contain the elements based on if they had the same status.
The trick here is, I do not want to do a case check based on hard coded status names as they can be random. I want to basically do a dynamic comparison, and say "if you are unique, then create a new array and stick yourself in there, if an array already exists with the same status than stick me in there instead". A sample result could look something like this.
Ive really had a challenge with this because the only way I can think to do it is check every single element against every other single element, and if unique than create a new array. This gets out of control fast if the original array is larger than 100. There must be some built in functions that can make this efficient.
<?php
$sortedArray = array(
['active'] => array(
array(
'id' => 10,
'status' => 'active'
),
array(
'id' => 12,
'status' => 'active'
)
),
['closed'] => array(
array(
'id' => 11,
'status' => 'active'
)
),
['stopped'] => array(
array(
'id' => 13,
'status' => 'active'
)
),
)
$SortedArray = array();
$SortedArray['active'] = array();
$SortedArray['closed'] = array();
$SortedArray['stopped'] = array();
foreach($statuses as $Curr) {
if ($Curr['status'] == 'active') { $SortedArray['active'][] = $Curr; }
if ($Curr['status'] == 'closed') { $SortedArray['closed'][] = $Curr; }
if ($Curr['status'] == 'stopped') { $SortedArray['stopped'][] = $Curr; }
}
You can also do it with functional way though it's pretty the same like Marc said.
$sorted = array_reduce($statuses, function($carry, $status) {
$carry[$status['status']][] = $status;
return $carry;
}, []);

using yield to return an array of data

I never used generators in PHP. I understand the way to use it :
Foreach an array to do some tasks for each value like greping a specific line into a big file to remove some caracteres..
What I need :
I need to retrieve all bands from my dabatase. Sure I have the 'limit' argument to don't exceed the PHP's memory (there're 30 000 bands..).
I have to filters values and return a new array to the client into my REST API.
What I want to know :
Is it interesting for me to create a method into a trait called 'generator' to perform the code bellow ?
In all cases, I have to create a new array to return it into my method
$bands = Models\Bands::find($bandsParameters);
$json = [];
foreach ($bands as $band) {
$followers = $band->getFollowers();
$followersArr = [];
foreach ($followers as $follower) {
$followerImage = $follower->getImage();
$followerObj = (object)[
'id' => $follower->id,
'username' => $follower->username,
'image' => $followerImage->url,
'online' => $follower->online,
'createdOn' => $follower->createdOn,
'updatedOn' => $follower->updatedOn,
'lastLogin' => $follower->lastLogin,
];
$followersArr[] = $followerObj;
}
$info = $band->getInfo($bandInfoParameters)->getFirst();
$bandObj = (object)[
'id' => $band->id,
'name' => $band->name,
'style' => $band->styles,
'country' => $band->country,
'summary' => isset($info->summary) ? $info->summary : null,
'followers' => $followersArr,
'createdOn' => $band->createdOn,
'updatedOn' => $band->updatedOn,
'authoredBy' => $band->authoredBy,
'updatedBy' => $band->updatedBy,
];
$json[] = $bandObj;
}
return ['key' => 'bands', 'value' => $json];

Codeigniter combining information

first of, just wanted to let you know that I am a newbie at CI. but I am having trouble with this piece of code where is breaking and I can't seem to be able to find the answer anywhere.
for some reason the code is breaking at the first if statement.. if possible could you help me out understand what is really happening there?
Thank you all for your help!
function main
{
$this->load->model(getData) psudo code for this area...
}
---model---
function getData....
{
Sql = this->db->query(sql code that returns all the information required.)
$result = $sql->result_array();
$types = array ( 'EVENT|TIME' => array( 'id' => 1, 'name' => 'Regular' ),
'PROPOSITION|REGULAR' => array( 'id' => 2, 'name' =>'Propositions'),
'EVENT|TIME' => array( 'id' => 3, 'name' => 'Now' ),
'PROPOSITION|FUTURES' => array( 'id' => 4, 'name' => 'Future' ));
$var = array();
foreach ($result as $event) {
$cat = $event['type'] . '|' . $event['sub_type'];
$typeId = $types[$cat]['id'];
if(!is_array($var[$event['event_id']]['var'][$event['type_id']]))
{
if(!is_array($var[$event['event_id']]))
{
$var[$event['event_id']] = array( 'event_name' =>
$event['event_name'],'event_abbreviation' =>
$event['event_abbreviation']);
}
$var[$event['event_id']]['var'][$event['type_id']] = array(
'type_name' => $event['abbreviation'],'type_abbreviation' => $event['name']
);
}
$event[$event['event_id']]['var'][$event['type_id']]['types'][$typeId] =
$types[$cat]['name'];
}
return $myResults;
}
In this line
if(!is_array($var[$event['event_id']]['var']$event['type_id']]))
You are missing a [ somewhere. I'm guessing before $event['type_id'].
So replace with:
if(!is_array($var[$event['event_id']]['var'][$event['type_id']]))

php create a new array from search results of another array

My initial array is
$employees = array(
array('name' => 'jack',
'area' => 'crafts'),
array('name' => 'janet',
'area' => 'aquatics'),
array('name' => 'brad',
'area' => 'crafts')
);
I am trying to create a new array based on the search results of another array so the new array should look like this if I search for 'crafts':
$employees2 = array(
array('name' => 'jack',
'area' => 'crafts'),
array('name' => 'brad',
'area' => 'crafts')
);
What is the simplest solution I can do get get this new result.
foreach($employees as $key => $value){
if($value['area']=='crafts'){
$employees2[] = $value;
}
}
This quite simply loops through the first array and checks the value of "area" in the internal array. If the value is equal to "crafts" you can then put that into a new array which is called $employees2. You can change crafts to whatever you want and add anything you want between the [ ] in employees2 if you wish to customise the key.
Try this:
$employees = array(
array('name' => 'jack',
'area' => 'crafts'),
array('name' => 'janet',
'area' => 'aquatics'),
array('name' => 'brad',
'area' => 'crafts')
);
$employees2 = array();
foreach ($employees as $key) {
if($key['name'] == "jack")
{
array_push($employees2,array('name'=>$key['name'],'area'=>$key['area']));
}
}
var_dump($employees2);
The array_push do all the trick ;)
Saludos.
You could simplify the syntax (but not the algorythmic complexity) by using a utility-belt library Underscore.php (http://brianhaveri.github.com/Underscore.php/)
There's a number of array-"plucking" methods that saves you the need to write loops, but under the bonnet it does much of the same as decribed in answers above.
I will assume that the possible result set can be large. In which case you would want to process the array with as little extra memory as possible. For this I suggest iterating through the array by reference and unsetting the items that do not match your criteria. Possibly less overhead than creating a new array to store the items that match your filter. Then you can check if the array is empty or not to determine if the filter returns any results. Like so:
<?php
// maybe this will be set through an option from the UI
$area_filter = 'crafts';
// fetched results
$employees = array(
array('name' => 'jack',
'area' => 'crafts'),
array('name' => 'janet',
'area' => 'aquatics'),
array('name' => 'brad',
'area' => 'crafts')
);
// filter out the items that match your filter
foreach($employees as $i => &$employee){
if($employee['area'] != $area_filter){
unset($employees[$i]);
}
}
// do something with the results
if(!empty($employees)){
print_r($employees);
} else {
echo "Sorry, your filter '$area_filter' did not match any results\n";
}
?>
Try this :
$employees = array(
array('name' => 'jack',
'area' => 'crafts'),
array('name' => 'janet',
'area' => 'aquatics'),
array('name' => 'brad',
'area' => 'crafts')
);
$employees = array_filter($employees, function($employee) {
return ($employee['area'] == 'crafts' );
});
echo "<pre>";
print_r($employees);

Multidimensional array - search for same value

I have a multidimensional array which I am looping through using a foreach loop.
I have then need to check whether any of those arrays have the key of 'parent_page' and the same value of any other arrays, such as:
$arrMulti = array(array(
'page_id' => 1,
'page_parent' => 28,
'page_title' => 'Testing'
), array(
'page_id' => 2,
'page_parent' => 30,
'page_title' => 'A seperate page'
), array(
'page_id' => 3,
'page_parent' => 28,
'page_title' => 'Testing Sub Page'
));
So $arrMulti[0]['page_parent'] would match with $arrMulti[2]['page_parent'], so I need to then create a new array using those, something like this:
$arrParentIDs = array( 'parent_id' => array(
1,
3
));
Sorry for the poor explanation, but do you have any idea on how to do this?
Thanks!
$parentIds = array();
foreach($arrMulti as $temp):
if(isset($temp['page_parent'] && !in_array($temp['page_parent'], $parentIds)){
$parentIds[] = $temp['page_parent'];
}
endforeach;
var_dump($parentIds);//to show the contents
Try something like this..
foreach($arrMulti as $array) {
foreach($array as $key=>$val) {
//your statement/condition
}
}

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